OAKES, Circuit Judge:
This appeal is from a conviction for causing to be transmitted in interstate commerce a communication containing a “threat to injure the person of another,” 18 U.S.C. §§ 2, 875(c).1 The offense charged in the indictment was that Russell Kelner, a member of the Jewish Defense League (JDL), caused to be transmitted in interstate commerce a threat to assassinate Yasser Arafat. Kelner was convicted after a jury trial in the United States District Court for the Southern District of New York, before Richard Owen, Judge. He was sentenced to imprisonment for one year with execution suspended, placed on probation for four years and given a $1,000 committed fine. We affirm.
The objective facts are not seriously disputed. On November 11, 1974, Yasser Arafat, leader of the Palestine Liberation Or[1021]*1021ganization (PLO), was to be in New York to attend a session of the United Nations General Assembly which he had been invited to address. Both his presence in New York and his invitation to appear before the United Nations had aroused resentment among American Jews, particularly in New York City. About 5:30 p. m. on that day United Press International (UPI) received notification from the JDL of a news conference to be held later that evening at JDL headquarters. UPI thereupon notified its assorted radio, television and newspaper customers of the upcoming news event. One of those notified was WPIX-TV (Channel 11), a licensed television station in New York City with a telecast range of 50 miles extending into Connecticut and New Jersey. The station had previously dispatched WPIX reporter John Miller to cover a JDL demonstration in front of the Waldorf-Astoria Hotel in Manhattan where Arafat and a PLO delegation were expected to stay.2
After attending the demonstration, Miller was assigned to cover the JDL press conference. When he and his film crew arrived at the JDL headquarters the conference had already started. Appellant, Kelner, was seated in military fatigues behind a desk with a .38 caliber “police special” in front of him. To Kelner’s right another man was dressed in military fatigues. Miller heard one of the several reporters at the conference ask Kelner whether he was talking about an assassination plot and heard Kelner answer in the affirmative. The WPIX crew quickly filmed general shots of the press conference without sound for use as a “lead-in” on the news and then began filming an actual interview of Kelner by Miller. The reporter, holding a microphone with the WPIX channel number in large numerals on it, asked Kelner to go ahead and the following exchange took place:
Kelner: We have people who have been trained and who are out now and who intend to make sure that Arafat and his lieutenants do not leave this country alive.
Miller: How do you plan to do that? You’re going to kill him?
Kelner: I’m talking about justice. I’m talking about equal rights under the law, a law that may not exist, but should exist.
Miller: Are you saying that you plan to kill them?
Kelner: We are planning to assassinate Mr. Arafat. Just as if any other mur— just the way any other murderer is treated.
Miller: Do you have the people picked out for this? Have you planned it out? Have you started this operation?
Kelner: Everything is planned in detail.
Miller: Do you think it will come off?
Kelner: It’s going to come off.
Miller: Can you elaborate on where or when or how you plan to take care of this?
Kelner: If I elaborate it might be a problem in bringing it off.
Following the interview, the film was reviewed at the WPIX studios where the film editors determined that it should be televised on the ten o’clock WPIX Channel 11 news that evening with the tape of the exchange above quoted in unedited form. The exchange between Kelner and Miller was then broadcast on television in its entirety and constituted the principal evidence of the Government at the trial. We have seen the videotape as it was played for us at the oral argument of this appeal.
Several character witnesses testified on Kelner’s behalf at the trial. Kelner himself testified that at the time his statements were made neither he nor the JDL had any plans to carry out an assassination attempt but that what he was trying to convey was a JDL response to threats from the PLO. Kelner claimed that his sole objective was [1022]*1022to show the PLO that “we [as Jews] would defend ourselves and protect ourselves and . [that the PLO] would not be able to accomplish anything in accordance with their threats.”
Appellant makes five claims on this appeal. Our acceptance of any one of the first four would require reversal of the conviction and dismissal of the indictment; acceptance of the fifth claim would require a remand for a new trial. The first point argued for reversal is that Kelner did not “cause” the transmission of a communication in interstate commerce within the meaning of 18 U.S.C. § 2, note 1 supra, because his alleged threat was made in the context of a television news interview and it was the wholly independent conduct of the television station that resulted in the film of the interview being telecast throughout metropolitan New York on the television news. The second is that there was no “communication” within the statute, 18 U.S.C. § 875(c), note 1 supra, because there was no specific addressee of the alleged threat, that is to say, the appellant was not expecting Arafat to watch the WPIX ten o’clock news and there was no evidence that the “threat” actually reached Arafat. Appellant’s third claim is that there was no communication “in interstate commerce” within the statute because even though WPIX televises beyond the borders of New York the communication did not have to cross state lines to travel from Kelner to Arafat. The fourth and most troubling of appellant’s claims is that the statements made were not “threats” within the meaning of the statute because appellant had no intention of actually using force and the statements were only “political hyperbole.” Kelner has also asked for a remand for a new trial on the basis that the prosecutor was improperly allowed to cross-examine appellant’s reputation witnesses in connection with arrests occurring after the alleged offense here involved.
Appellant’s first point is by no means unique to offenses charged under 18 U.S.C. § 875(c). Although grounded in the statutory language of 18 U.S.C. § 2, the argument that a person cannot be liable for criminal conduct which he has not “caused” has been a premise of our criminal law from its very origin. Cases such as Terry v. United States, 131 F.2d 40, 44 (8th Cir. 1942), and United States v. Fox, 95 U.S. 670, 671, 24 L.Ed. 538, 539 (1878), have long recognized that “[u]pon principle, an act, which is not an offense at the time it is committed cannot become such by any subsequent independent act of [a] party with which it has no connection.” Id. See also United States v. Dietrich, 126 F. 676, 685 (8th Cir. 1904). However, viewing the evidence in this case most favorably to the Government’s position, as the jury verdict requires us to do, it is apparent that Kelner willfully caused the transmission of his threat over the WPIX facilities in that he took action without which the communication would not have occurred, intending (or at least reasonably foreseeing) that his statement would be transmitted in interstate commerce by others. It is clear enough that a person may be held responsible as a principal under 18 U.S.C. § 2(b), see note 1 supra, for causing another to do an act which would not have been criminal if it had been performed independently by that other person. United States v. Kelley, 395 F.2d 727, 729 (2d Cir.), cert. denied, 393 U.S. 963, 89 S.Ct. 391, 21 L.Ed.2d 376 (1968); United States v. Lester, 363 F.2d 68, 72-73 (6th Cir. 1966), cert. denied, 385 U.S. 1002, 87 S.Ct. 705, 17 L.Ed.2d 542 (1967). It is a general principle of causation in criminal law that an individual (with the necessary intent) may be held liable if he is a cause in fact of the criminal violation, even though the result which the law condemns is achieved through the actions of innocent intermediaries. See, e. g., United States v. Giles, 300 U.S. 41, 48-49, 57 S.Ct. 340, 344, 81 L.Ed. 493, 497-498 (1937); United States v. Scandifia, 390 F.2d 244, 249 (2d Cir. 1968), vacated on other grounds sub nom. Giordano v. United States, 394 U.S. 310, 89 S.Ct. 1163, 22 L.Ed. 297 (1969). The charge at appellant’s trial closely followed the language of United States v. Scandifia, supra, stating that appellant could be found to have “caused” the transmission' of the al[1023]*1023leged threat in interstate commerce if he made the threat in fact and intended, or could reasonably have foreseen, that the threat would be transmitted by WPIX-TV. The fact that WPIX made an editorial decision to publicize the news does not render this basic principle of criminal law inapposite. It is unnecessary that the intermediary who commits the forbidden act have a criminal intent.3 See United States v. Bryan, 483 F.2d 88, 92 (3d Cir. 1973) (en banc); United States v. Lester, supra. See also Pereira v. United States, 347 U.S. 1, 8-9, 74 S.Ct. 358, 362-63, 98 L.Ed. 435, 444 (1954) (delivery of check drawn on out-of-state bank to local bank for collection “caused” it to be transported in interstate commerce as deliverer intended local bank to send check to drawee bank for collection); Kolod v. United States, 371 F.2d 983 (10th Cir. 1967), vacated on other grounds, 390 U.S. 136, 88 S.Ct. 752, 19 L.Ed.2d 962 (1968) (evidence sufficient where it permits inference that defendant could have reasonably anticipated interstate ramifications of his threat or of the wrongful conduct of those with whom he was associated). Here the evidence was quite clear that the JDL called the press conference and that during the conference Kelner knew that he was being interviewed by television when he made the threat. Appellant does not seriously dispute the sufficiency of the evidence in this regard. The cases which appellant has cited to us, Terry v. United States, supra, United States v. Fox, supra, and United States v. Dietrich, supra, all involved an intervening act by a third party that could not have been foreseen or was against the will of the alleged defendant. Those cases are plainly inapposite at this appeal.
Appellant argues that there was no “communication” within the meaning of 18 U.S.C. § 875(c) because there was no specific person to whom the threat was addressed and to whom the defendant intended to cause emotional suffering. The claim is that the broadcast of the threat to an indefinite and unknown audience is not a “communication” of that threat. The mere statement of this argument suggests its improbability. Congress could not have intended to have left such a gaping hole in its statutory prohibition against the communication of threats in commerce. If appellant’s contention were accepted, any would-be threatener could avoid the statute by seeking the widest possible means of disseminating his threat. Publication of the threat in 100 major newspapers, even though it would reach only an “indefinite and unknown audience,” would be as sure a means of communicating the threat to the victim as would calling him on the telephone. Our concern under the statute is not whether the means of communication chosen by the appellant caused the threat to reach “an indefinite and unknown audience,” but whether the appellant intended to communicate his threat to Arafat through the chosen means, the television interview. As Judge Owen quite properly charged, it was sufficient to support the conviction of Kelner if the jury found that in his use of the means of the televised press conference Kelner held “a specific intent to communicate a threat to injure.” United States v. Holder, 302 F.Supp. 296, 299 (D.Mont.1969), aff’d, 427 F.2d 715 (9th Cir. 1970). It was not necessary under the statute for the Government to prove that appellant had a specific intent or a present ability to carry out his threat, 302 F.Supp. at 300; see also Bass v. United States, 239 F.2d 711, 716 (6th Cir. 1957), but only that he intended to communicate a threat of injury through means reasonably adapted to that purpose. We have no doubt that appellant’s activity is properly within the scope of the term “communication” as used in 18 U.S.C. § 875(c).
Appellant’s next argument is based upon his allegation that Arafat and his aides [1024]*1024were in New York City át the time that Kelner’s threat was made.4 From this assumption, appellant argues that there could have been no communication of the threat “in interstate commerce” since both the appellant and Arafat were in the same state at the time the threat was made. This argument, however, misapplies both the language and the scheme of the statute. The statute does not require that the communication between Kelner and Arafat be in commerce; rather, it requires that the threat which is communicated be transmitted in commerce. Kelner’s choice of a method of transmitting his threat, a telecast reaching three states which is plainly “in commerce,” brings him within the literal scope of the statute. Appellant contends, however, that the nexus of his activity was predominantly local, and that the statute should not be read literally to reach into spheres of primarily local concern. However much we might agree as a matter of principle that the congressional reach should not be overextended or that prosecutorial discretion might be exercised more frequently to permit essentially local crimes to be prosecuted locally, see H. Friendly, Federal Jurisdiction: A General View 58-59 (1973), we do not feel that Congress is powerless to regulate matters in commerce when the interstate features of the activity represent a relatively small, or in a sense unimportant, portion of the overall criminal scheme. See, e. g., Cleveland v. United States, 329 U.S. 14, 67 S.Ct. 13, 91 L.Ed. 12 (1946) (white slave traffic); Whitaker v. United States, 5 F.2d 546 (9th Cir.), cert. denied, 269 U.S. 569, 46 S.Ct. 25, 70 L.Ed. 416 (1925) (interstate transportation of stolen autos). Our problem is not whether the nexus of the activity is “local” or “interstate”; rather, under the standards which we are to apply, so long as the crime involves a necessary interstate element, the statute must be treated as valid. Here, as in Bell v. United States, 349 U.S. 81, 75 S.Ct. 620, 99 L.Ed. 905 (1955), the constitutional basis for the statute is the withdrawal of interstate facilities for the achievement of the proscribed evil. Since the statutory offense of which appellant has been convicted necessarily involves the use of an interstate facility for transmission of his threat, we are satisfied that the statute and conviction are sufficiently commerce-related to support federal prosecution.
Appellant’s fourth argument for reversal is that his statements were not “threats” within the meaning of the statute because they were, rather, political hyperbole, and that the case should not, therefore, have been submitted to the jury. See Watts v. United States, 394 U.S. 705, 708, 89 S.Ct. 1399, 1401, 22 L.Ed.2d 664, 667 (1969), rev’g, 131 U.S.App.D.C. 125, 402 F.2d 676 (1968); id., 402 F.2d at 686 (Wright, J., dissenting). Appellant additionally claims that to save 18 U.S.C. § 875 from constitutional invalidity as an infringement of the right to free speech there must be evidence of specific intent on his part to carry out the threat as well as a statement unambiguously constituting a threat on the life of Arafat and his aides. He suggests that the statement which he made was a communication of information or opinion that “justice” and “equal rights” demanded that Arafat be treated as a murderer in view of assorted PLO crimes on innocent Israeli civilians. He points out that since the threat was broadcast to the general public it is especially deserving of constitutional protection under the First Amendment because it relates to the “free trade in ideas,” Abrams v. United States, 250 U.S. 616, 630, 40 S.Ct. 17, 22, 63 L.Ed. 1173, 1180 (1919) (Holmes, J., dissenting), or “the power of reason as applied through public discussion,” Whitney v. California, 274 U.S. 357, 375, 47 S.Ct. 641, 648, 71 L.Ed. 1095, 1105 (1927) (Brandeis, J., concurring), overruled by Brandenburg v. Ohio, 395 U.S. 444, 449, 89 S.Ct. 1827, 23 L.Ed.2d 430 (1969).5
[1025]*1025But it cannot be said as a matter of law that appellant was stating only ideas. He said, after all,
We have people who have been trained and who are out now and who intend to make sure that Arafat and his lieutenants do not leave this country alive .. We are planning to assassinate Mr. Arafat . . .. Everything is planned in detail.
The court left it to the jury to determine whether Kelner “intended the words as a threat against Yasser Arafat and his lieutenants ... or whether he said those words as a statement of opposition to Arafat . . .. ” The court charged the jury that “[m]ere political hyperbole or expression of opinion or discussion does not constitute a threat” and stated that if the jury found that the statements were “no more than an indignant or extreme method of stating political opposition to Arafat or the PLO” it would be justified in “finding that no threat was in fact made.” The jury finding of guilty, therefore, is predicated on the judgment that there was here a genuine threat to kill which, even though it might have been made in the context of a protest against PLO outrages, did not constitute only a political expression of opinion. In order to convict under the charge given, the jury had to, and we must assume did, find that the statements were more than political, that they were “an expression of an intention to inflict” injury, of “such a nature as could reasonably induce fear.” They were also made “knowingly and willfully,” as the judge defined those terms, “comprehended” by the appellant and “voluntarily and intentionally uttered . with the apparent determination to carry them into execution.”6 They were not made conditionally or in jest. Since it is the utterance which the statute makes criminal, not the specific intent to carry out the threat, wé think the charge adequately instructed on the statutory elements of the crime. Only if the Constitution requires that we read into the offense the element of specific intent to carry out the threat would the charge given be deficient.
On the most elementary, level it would seem possible to conclude that a threat of murder falls within the narrow class of “fighting words” which are so inherently deleterious to social order, see Chaplinsky v. New Hampshire, 315 U.S. 568, 572, 62 S.Ct. 766, 769, 86 L.Ed. 1031, 1035 (1942); Cantwell v. Connecticut, 310 U.S. 296, 308, 60 S.Ct. 900, 905, 84 L.Ed. 1213, 1220 (1940), and so inherently unrelated to the “robust” political debate necessary to a democratic society, see Watts, supra, 402 F.2d at 683 n.17, that the umbrella of the First Amendment does not protect the threat from governmental restriction. We do not, however, rest on this simplistic and perhaps misleading proposition. Professor Emerson points out that both Chaplinsky and Cantwell were cases involving the use of expression that might lead to a breach of the peace in the streets, that is to say, they were incite[1026]*1026ment cases. T. Emerson, The System of Freedom of Expression 313-15 (1970). Here the crime charged is not that appellant was inciting others to assassinate Arafat but that he himself was threatening to do so. The question remains, therefore, whether an unequivocal threat which has not ripened by any overt act into conduct in the nature of an attempt is nevertheless punishable under the First Amendment, even though it may additionally involve elements of expression.
On that question we believe we have help from Watts, supra, 394 U.S. at 705-08, 89 S.Ct. at 1399-1400, 22 L.Ed.2d at 664-665. The statute involved in that case, 18 U.S.C. § 871, punishing threats to the life of the President, was found to be “constitutional on its face,” given the “overwhelming” interest of the Congress in protecting the safety and freedom of movement of the Chief Executive in performing his duties. 394 U.S. at 707, 89 S.Ct. at 1401, 22 L.Ed.2d at 666. Although the statute under which Kelner has been convicted makes it a criminal act to transmit threats to persons generally, we believe that important national interests similar to those in Watts exist here, more specifically, the governmental interest of reducing the climate of violence to which true threats of injury necessarily contribute.7 As a part of the Government’s constitutional responsibility to insure domestic tranquility, it is properly concerned — in an era of ever-increasing acts of violence and terrorism, coupled with technological opportunities to carry out threats of injury — with prohibiting as criminal conduct specific threats of physical injury to others, whether directed toward our own or another nation’s leaders or members of the public. However, as the court said in Wafts, even when such valid governmental interests are identified and accepted, a statute such as the one here “which makes criminal a form of pure speech, must be interpreted with the commands of the First Amendment clearly in mind.” Id.
In confronting this problem of interpreting the threat statute consistently with the First Amendment, the Supreme Court did not accept the solution argued for by appellant and by Judge J. Skelly Wright, dissenting in Waffs, supra, 402 F.2d at 687, of conditioning conviction upon proof of a specific intent to carry out the threat made. In alleviation of Judge Wright’s concerns lest men go unprotected by the First Amendment and be convicted “of using offensive language, with some implication against the President’s life, which [is] meant as jest, as rhetoric,” id. at 689, the Court construed the word “threat” to exclude statements which are, when taken in context, not “true threats” because they are conditional and made in jest. 397 U.S. at 708, 89 S.Ct. at 1401, 22 L.Ed. at 667. In effect, the Court was stating that threats punishable consistently with the First Amendment were only those which according to their language and context conveyed a gravity of purpose and likelihood of execution so as to constitute speech beyond the pale of protected “vehement, caustic . unpleasantly sharp attacks on government and public officials.” See New York Times Co. v. Sullivan, 376 U.S. 254, 270, 84 S.Ct. 710, 721, 11 L.Ed.2d 686, 701 (1964). We believe that this limitation upon the word “threat” is a construction which satisfies First Amendment concerns as fully as would appellant’s and Judge Wright’s requirement that specific intent to carry out the threat be proven.8
[1027]*1027The purpose and effect of the Watts constitutionally-limited definition of the term “threat” is to insure that only unequivocal, unconditional and specific expressions of intention immediately to inflict injury may be punished — only such threats, in short, as are of the same nature as those threats which are, as Judge Wright recognizes, “properly punished every day under statutes prohibiting extortion, blackmail and assault without consideration of First Amendment issues.” Watts, supra, 402 F.2d at 690. The Watts requirement of proof of a “true threat,” it may be seen, works ultimately to much the same purpose and effect as would a requirement of proof of specific intent to execute the threat because both requirements focus on threats which are so unambiguous and have such immediacy that they convincingly express an intention of being carried out. These qualities of unequivocal immediacy and express intention are the most, perhaps, that even Judge Wright’s and the appellant’s proposed requirement of specific intent could demand in any event since such an intent may be proved circumstantially; the jury under that test would have the “almost impossible task of evaluating [a defendant’s] subjective mental processes in relation to executing his apparent intent as that intent was manifested by his words and gestures in context.” Id. at 684 (opinion of Burger, Circuit Judge).
It is for these reasons that we believe a narrow construction of the word “threat” in the statute here, 18 U.S.C. § 875(c), as approved in Watts, 394 U.S. at 708, 89 S.Ct. at 1401, 22 L.Ed.2d at 667, is consonant with the protection of First Amendment interests. Even where the threat is made in the midst of what may be other protected political expression, such as appellant’s reference to “justice” and “equal rights under the law,” the threat itself may affront such important social interests that it is punishable absent proof of a specific intent to carry it into action when the following criteria are satisfied. So long as the threat on its face and in the circumstances in which it is made is so unequivocal, unconditional, immediate and specific as to the person threatened, as to convey a gravity of purpose and imminent prospect of execution, the statute may properly be applied. This clarification of the scope of 18 U.S.C. § 875(c) is, we trust, consistent with a rational approach to First Amendment construction which provides for governmental authority in instances of inchoate conduct, where a communication has become “so interlocked with violent conduct as to constitute for all practical purposes part of the [proscribed] action itself.” T. Emerson, supra, at 329.9
[1028]*1028The question of the application of the First Amendment to the statute here is properly for the court rather than the jury under Dennis v. United States, 341 U.S. 494, 511-15, 71 S.Ct. 857, 868-870, 95 L.Ed. 1137, 1153-1155 (1951).10 We must determine under the circumstances of this case whether appellant’s statement unambiguously constituted an immediate threat upon the life or safety of Arafat and his aides. As we have already indicated, appellant’s language met the criteria we have set forth. It was not made in a jesting manner; the military uniforms and the presence of the .38 pistol emphasize this. The language was unequivocal and unconditional: “We are planning to assassinate Mr. Arafat.” It was immediate: “We have people who have been trained and who are out now . ..” It was specific as to target: “Arafat and his lieutenants.” Therefore, in accordance with the above, we conclude that the threat was within the constitutionally permissible scope of the statute and we reject appellant’s fourth claim of error.11
With regard to appellant’s final argument, we hold that the cross-examination of Kelner’s character witnesses was proper. Of first note is the fact that the failure of appellant to object below should preclude his objection here. United States v. Indiviglio, 352 F.2d 276 (2d Cir. 1965) (en banc), cert. denied, 383 U.S. 907, 86 S.Ct. 887, 15 L.Ed.2d 663 (1966). Even had timely objection been made, however, the cross-examination of the witnesses was proper. The four character witnesses had testified as to Kelner’s present reputation for peacefulness as well as for truth and veracity. As such, evidence postdating the indictment but predating the witness’s testimony was relevant and cross-examination of the witnesses regarding their awareness of appellant’s post-indictment arrest was proper. United States v. Lewis, 157 U.S.App.D.C. 43, 482 F.2d 632, 643 (1973). The allowable scope of the impeaching inquiry should be tested by comparison with the reputation asserted. Michelson v. United States, 335 U.S. 469, 483-84, 69 S.Ct. 213, 222, 93 L.Ed. 168, 177-78 (1948). We would be hard put, moreover, even if there were error in this respect, to find such error other than harmless.
Judgment affirmed.