The defendant, Walter Ward Dorrell III, appeals from his convictions for willfully injuring property of the United States, in violation of 18 U.S.C. § 1361 (1982), and for knowingly entering a military reservation for an unlawful purpose, in violation of 18 U.S.C. § 1382 (1982). Dorrell objects to the trial court’s refusal to allow him to present a defense of necessity and to the court’s exclusion of certain evidence and redaction of his written confession. The district court had jurisdiction under 18 U.S.C. § 3231 (1982). This court has jurisdiction over Dorrell’s timely appeal under 28 U.S.C. § 1291 (1982). We affirm.

I.

FACTS AND PROCEEDINGS BELOW

On December 21, 1983, security guards apprehended the defendant in the area of the missile assembly plant at Yandenburg Air Force Base. After searching the defendant and the surrounding area, the guards found that Dorrell had carried with him a variety of tools, including a sledgehammer, two screwdrivers, a pair of bolt cutters, a crescent wrench, and a can of spray paint. Political slogans had been spray-painted on the missile assembly building and on a large shipping container standing nearby.

Dorrell was taken to the base security building and questioned. He received and waived his Miranda rights. He then admitted that he had entered the base with the intention of damaging the MX missiles and that he had spray-painted the missile assembly building. Finally, Dorrell prepared a written statement setting forth the substance of his oral confession.

Two days earlier, Dorrell had made a videotape, explaining his motivation for entering the base. On the tape, Dorrell stated that he intended to enter the base and destroy the MX missile. He wished to pound the missile into scrap metal, which could be used to make an instrument of peace. His desire to do so stemmed from his concern about nuclear war and world starvation. Dorrell expressed similar sentiments in both his oral confession and his written statement.

At a pretrial discovery conference, Dorrell’s counsel intimated that Dorrell intended to assert the necessity defense. The government moved in limine to exclude this defense.^[1] At the hearing on the motion, the district court ruled that the defendant should make an in camera offer of proof if he intended to assert the defense at trial. Accordingly, Dorrell lodged under seal an offer of proof summarizing the evidence he[*430] would present in support of a necessity defense. Essentially, Dorrell proposed to introduce his own testimony and the testimony of three other witnesses about the threat of nuclear war and to play his videotape to the jury.

After reviewing the defendant’s offer of proof, the district court granted the government’s motion in limine, finding that the proffered evidence was insufficient as a matter of law to support the necessity defense. The court also rebuffed Dorrell’s efforts to introduce the videotape, ruling on the morning of the trial that the tape was inadmissible. Finally, the court granted the government’s motion in limine to redact the defendant’s written confession, removing as irrelevant those portions that stated his reasons for entering Vandenburg.

Following a jury trial, Dorrell was found guilty as charged. He received a suspended sentence and was placed on probation for five years. Commencement of the probationary period was stayed pending the outcome of this appeal.

II.

ISSUES

The primary issue raised on appeal concerns the trial court’s treatment of the necessity defense. Dorrell contends that the trial court erred in granting the government’s motion in limine to exclude that defense. Dorrell also argues that the trial court abused its discretion in refusing to admit the videotape into evidence and in redacting Dorrell’s written confession.

III.

DISCUSSION

A. Necessity Defense

In support of his position that the granting of the motion in limine was error, Dorrell argues that the judge should have allowed him to present the evidence to the jury before ruling on the defense. Had he failed to establish the elements of the defense, the appropriate response, Dorrell contends, would have been to decline to give a jury instruction on necessity. This contention is without merit.

Admittedly, a criminal defendant has the right to have a jury resolve disputed factual issues. United States v. Contento-Pachon, 723 F.2d 691, 695 n. 2 (9th Cir. 1984); see Sandstrom v. Montana, 442 U.S. 510, 523, 99 S.Ct. 2450, 2458, 61 L.Ed.2d 39 (1979). Where the evidence, even if believed, does not establish all of the elements of a defense, however, the trial judge need not submit the defense to the jury. United States v. Bifield, 702 F.2d 342, 346 (2d Cir.), cert. denied, 461 U.S. 931, 103 S.Ct. 2095, 77 L.Ed.2d 304 (1983); see United States v. Bailey, 444 U.S. 394, 416-17, 100 S.Ct. 624, 637-38, 62 L.Ed.2d 575 (1980). Accordingly, we have in the past allowed the district court to determine the admissibility of the necessity defense by motions in limine. See, e.g., Contento-Pachon, 723 F.2d at 695; United States v. Lowe, 654 F.2d 562, 566-67 (9th Cir.1981). The sole question presented in such situations is whether the evidence, as described in the defendant’s offer of proof, is insufficient as a matter of law to support the proffered defense. If it is, then the trial court should exclude the defense and the evidence offered in support. Contento--Pachon, 723 F.2d at 693 (duress defense); United States v. Shapiro, 669 F.2d 593, 596 (9th Cir.1982) (same); accord United States v. Karr, 742 F.2d 493, 497 (9th Cir. 1984); United States v. Gordon, 526 F.2d 406, 408 (9th Cir.1975). The trial court ruled properly in this case.

“The defense of necessity is available when a person is faced with a choice of two evils and must then decide whether to commit a crime or an alternative.act that constitutes a greater evil.” Contento-Pachon, 723 F.2d at 695.^[2] Asserting the de[*431] fense requires a showing that the defendant “act[ed] to prevent ‘an imminent harm which no available options could similarly prevent.’ ” United States v. Nolan, 700 F.2d 479, 484 (9th Cir.) (quoting United States v. May, 622 F.2d 1000, 1008 (9th Cir.), cert. denied, 449 U.S. 984, 101 S.Ct. 402, 66 L.Ed.2d 247 (1980)), cert. denied, 462 U.S. 1123, 103 S.Ct. 3095, 77 L.Ed.2d 1354 (1983). In addition, the defendant must establish that he reasonably anticipated the existence of a direct causal relationship between his conduct and the harm to be averted. See United States v. Simpson, 460 F.2d 515, 518 (9th Cir.1972); see also United States v. May, 622 F.2d 1000, 1008 (9th Cir.), cert. denied, 449 U.S. 984, 101 S.Ct. 402, 66 L.Ed.2d 247 (1980).

Here, Dorrell’s asserted necessity defense fails for two reasons. First, even if believed, the evidence summarized in his offer of proof does not establish that Dorrell lacked alternative courses of action to change United States nuclear policy or to avert the risk of nuclear war. Second, Dorrell cannot establish that he reasonably anticipated that breaking into Vandenburg would achieve these ends. We shall examine briefly each of these deficiencies.

1. The Availability of Other, Legal Alternatives to Violating The Law

Those who wish to protest in an unlawful manner frequently are impatient with less visible and more time-consuming alternatives. Their impatience does not constitute the “necessity” that the defense of necessity requires. So it is here. Dorrell made no showing of the required “necessity.” “The defense of necessity does not arise from a ‘choice’ of several sources of action; it is instead based on a real emergency.” United States v. Lewis, 628 F.2d 1276, 1279 (10th Cir.1980), cert. denied, 450 U.S. 924, 101 S.Ct. 1375, 67 L.Ed.2d 353 (1981).^[3] Consequently, “if there was a reasonable, legal alternative to violating the law,” the defense fails. United States v. Bailey, 444 U.S. 394, 410, 100 S.Ct. 624, 634, 62 L.Ed.2d 575 (1980); accord United States v. Quilty, 741 F.2d 1031, 1033 (7th Cir.1984); United States v. Gant, 691 F.2d 1159, 1163-64 (5th Cir. 1982). Here, Dorrell had such an alternative.^[4]

[*432] Although it is doubtful that Dorrell could bring a legal challenge to United States nuclear policy, he does have recourse to the political process to redress his concerns regarding nuclear war. “There are thousands of opportunities for the propagation of the anti-nuclear message: in the nation’s electoral process; by speech on public streets, in parks, in auditoriums, in churches and lecture halls; and by the release of information to the media, to name only a few.” Quilty, 741 F.2d at 1033. The availability of this option prevents Dorrell from raising the necessity defense in the instant case.

Courts in other circuits have considered the status of the political process as an alternative to criminal behavior and have concluded that the defendant’s failure to resort to the political process precludes the assertion of the necessity defense to charges arising from political protests. For instance, in United States v. Seward, 687 F.2d 1270 (10th Cir.1982), cert. denied, 459 U.S. 1147,103 S.Ct. 789, 74 L.Ed.2d 995 (1983), the Tenth Circuit upheld the trial court’s refusal to entertain the defendant’s proferred necessity defense in a prosecution for trespassing arising from protests at the site of a nuclear power plant. The court noted that

[t]he defense of necessity ____ can be asserted only by a defendant who was confronted with such a crisis as a personal danger, a crisis which did not permit a selection from among several solutions, some of which did not involve criminal acts. It is obviously not a defense to charges arising from a typical protest.

Id. at 1276; accord United States v. Cassidy, 616 F.2d 101, 102 (4th Cir.1979); cf. Quilty, 741 F.2d at 1033-34 (defendants convicted of illegally entering military property were not entitled to a judgment of acquittal based on the necessity defense because of the availability of reasonable, legal, alternative ways to express their political message).

Admittedly, Dorrell’s offer of proof details his participation in a variety of protest activities and asserts that his political efforts were unavailing in preventing the development of the MX missile. In this respect Dorrell differs little from many whose passionate beliefs are rejected by the will of the majority legitimately expressed. Moreover, it may be he understates the effectiveness of the political process in this particular instance. To accept Dorrell’s position would amount to recognizing that an individual may assert a defense to criminal charges whenever he or she disagrees with a result reached by the political process. While the policy underlying the necessity defense is the promotion of greater values at the expense of lesser values, see W. LaFave & A. Scott, supra, § 50, at 382, it does not follow that the law should excuse criminal activity intended to express the protestor’s disagreement with positions reached by the lawmaking branches of the government. To do otherwise would deprive the protest of the validation of its sincerity that lawful punishment provides, force the courts to choose among causes they should make legitimate by extending the defense of necessity, and transgress the principle of separation of powers. Cf. United States v. May, 622 F.2d 1000, 1009 (9th Cir.1980) (rejecting proffered defense that the defendant’s acts were necessary to prevent violations of international law by the United States and noting, “We do not sit to render judgments[*433] upon the legality of the conduct of the government at the request of any person who asks us to because he happens to think that what the government is doing is wrong____ To [do so] would ... usurp[] the functions that the Constitution has given to the Congress and to the President.”), cert. denied, 449 U.S. 984, 101 S.Ct. 402, 66 L.Ed.2d 247 (1980). Accordingly, we hold that the availability of alternative avenues for political action requires affirmance of the district court’s decision to exclude Dorrell’s necessity defense.

2. Direct Causal Relationship Between Dorrell’s Conduct and the Harm to Be Averted

Dorrell’s argument also fails because he has not established that his actions would bring about the ends he sought. “An essential element of the so-called justification defenses is that a direct causal relationship be reasonably anticipated to exist between the defender’s action and the avoidance of harm.” United States v. Simpson, 460 F.2d 515, 518 (9th Cir.1972). Here, Dorrell failed as a matter of law to establish that his entry into Vandenburg and his spray-painting of government property could be reasonably anticipated to lead to the termination of the MX missile program and the aversion of nuclear war and world starvation.

Simpson supports this result. There the defendant broke into the file room of a local office of the Selective Service Administration and set fire to the Administration’s draft records. Accused of destroying government property in violation of 18 U.S.C. § 1361, the defendant sought during trial to introduce evidence showing that his actions were justifiable as an effort to avert the death and destruction caused by the Vietnam War. The district court rejected the proffered evidence and refused to read an instruction based on the justification — or necessity — defense. Id. at 517. This court affirmed, noting that the defendant’s actions were unreasonable. Id. at 518. The Vietnam conflict would have continued without regard to whether the local draft board could restore the damage done to its files. Id. at 518 n. 7. Therefore, the defendant’s assumption that burning the file room might have a significant effect on the harm he sought to remedy was unreasonable. Id. at 518; see also United States v. Cassidy, 616 F.2d 101, 102 (4th Cir.1979) (throwing blood and ashes on the walls and ceiling of the Pentagon as part of a political protest could not reasonably be expected to bring about a change in United States policy regarding nuclear weapons).

We considered a situation virtually identical to the present case in United States v. May, 622 F.2d 1000 (9th Cir.), cert. denied, 449 U.S. 984, 101 S.Ct. 402, 66 L.Ed.2d 247 (1980). There, the defendants, protesting the Trident missile system, entered a Naval submarine base in violation of 18 U.S.C. § 1382. This court affirmed the district court’s conclusion that the defendants had failed to satisfy all of the elements of the necessity defense “because there was no reasonable belief that a direct consequence of their actions would be the termination of the Trident program.” 622 F.2d at 1008.^[5]

[*434] Dorrell offers no indication of how he expected his conduct to bring about a change in the MX missile program or a reduction in the risk of nuclear war. He cannot demonstrate that he reasonably anticipated a direct causal relationship between his acts and the harm he sought to remedy. It follows that the district court’s decision to reject the necessity defense as a matter of law was correct.

B. The Videotape

On the videotape, Dorrell set forth his political and religious reasons for entering Vandenburg and damaging the missile assembly building. The district court ruled that the videotape was inadmissible after the government’s opposition on grounds that it was hearsay and irrelevant. On appeal, Dorrell asserts that the videotape is admissible under Fed.R.Evid. 803(3) as a “statement of [his] then existing state of mind____”

The trial court’s evidentiary rulings are reviewed for an abuse of discretion. United States v. Ordonez, 737 F.2d 793, 811 (9th Cir.1984). This standard applies to the trial court's exclusion of evidence as inadmissible hearsay. See United States v. Layton, 720 F.2d 548, 558 (9th Cir.1983), cert. denied, — U.S.-, 104 S.Ct. 1423, 79 L.Ed.2d 748 (1984).

Dorrell seeks to introduce the videotape “to prove the truth of the matter asserted.” That is, he seeks to prove what the videotape expresses — his reasons for entering Vandenburg and defacing the missile assembly building. The videotape therefore constitutes hearsay. Fed.R.Evid. 801(c).

Without regard to the possible admissibility of the videotapes under the hearsay exception of Rule 803(3) (then existing mental, emotional, or physical condition), the district court was entitled to exclude them under Rule 403. The rejection of the necessity defense reduced the relevance of the videotapes and, to the extent relevant, they were merely cumulative. Their exclusion did not constitute an abuse of discretion.

C. The Redacted Confession

While in the custody of the Vandenberg security forces, Dorrell prepared a handwritten statement confessing to the acts charged. The statement also set forth his political and religious motivations for entering the military compound and defacing the missile assembly building. After precluding the necessity defense, the court granted the government’s motion in limine to redact as irrelevant the portions of the written statement involving Dorrell’s motivations.

On appeal, Dorrell contends that the court’s redaction violated the “rule of completeness” embodied in Federal Rule of Evidence 106.^[6] Rule 106 seeks to avoid the unfairness inherent in “[t]he misleading impression created by taking matters out of context.” Fed.R.Evid. 106 advisory committee note.

Application of the rule of completeness is a matter for the trial judge’s discretion. United States v. Burreson, 643 F.2d 1344, 1349 (9th Cir.), cert. denied, 454 U.S. 830, 102 S.Ct. 125, 70 L.Ed.2d 106, 454 U.S. 847, 102 S.Ct. 165, 70 L.Ed.2d 135 (1981). Thus, the judge may exclude portions of written statements offered into evidence that are irrelevant. See id. Where the redacted statement is a confession,^[7] courts have held that there is no[*435] violation of the rule of completeness if the edited version neither “distorts the meaning of the statement or excludes information substantially exculpatory of the declarant,” United States v. Kaminski, 692 F.2d 505, 522 (8th Cir.1982), nor excludes “portions of a statement that are ... neither explanatory of [or] relevant to the admitted passages,” United States v. Marin, 669 F.2d 73, 84-85 (2d Cir.1982) (citations omitted).

In this case, removing Dorrell’s explanation of the political and religious motivations for his actions did not change the meaning of the portions of his confession submitted to the jury. The redaction did not alter the fact that he admitted committing the acts with which he was charged. Further, because the defense of necessity was unavailable, Dorrell’s motivation did not excuse the crimes he committed. The omitted portions of his confession were therefore not exculpatory.

We conclude that the redaction of Dorrell’s statement did not create a misleading impression by taking matters out of context. Dorrell was not prejudiced by the omission of his motivations from the statement admitted into evidence. The redaction of Dorrell’s statement by the district court, therefore, was not an abuse of its discretion.

AFFIRMED.