Also known as: initial aggressor · aggressor rule
Written by attorneys · grounded in primary & secondary sources — see below
A principle in self-defense doctrine providing that a person who initiates unlawful force against another forfeits the right to claim self-defense unless the person first withdraws from the encounter and communicates that withdrawal. The rule applies even in jurisdictions that otherwise eliminate any duty to retreat from a dwelling or workplace.
India Inoue angrily confronted her coworker inside their shared barn office over work assignments. She shoved him backward into a desk and advanced while raising a heavy chain. When he grabbed a pitchfork to defend himself, she claimed self-defense at trial. Because she had initiated the physical aggression, the court held that she retained a duty to retreat from the workplace before using force.
Ivy Ibarra angrily confronted the bank security guard in the lobby about her car being booted. She shoved the guard first. When the guard stepped forward with a baton, she drew a handgun and shot him. Because she had started the physical encounter and could have safely exited through a nearby door, her self-defense claim failed under the initial aggressor rule.
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Ibrahim Iqbal cornered a crew member on the cargo ship, shouted in his face, and jabbed him repeatedly in the ribs with the stated intent to teach him a lesson. When the crew member shoved him away, Iqbal fired a flare gun into the crew member's chest. Because Iqbal had purposely provoked the use of force in the same encounter to create a pretext for serious harm, the initial aggressor rule barred his self-defense justification.
No. Harsh words or prior mocking do not constitute initial aggression under the rule. Physical initiation of force, such as shoving or cornering another person, is required before the disqualification applies.
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Yes. An initial aggressor may regain the defense by withdrawing from the conflict and successfully communicating that withdrawal to the other person before using force in response.
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Yes. Even though a person generally need not retreat from a place of work, the rule restores the duty to retreat when the actor was the initial aggressor in that location.
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Conduct such as arming oneself in advance, issuing physical dares, or systematically escalating a dispute with the intent to create an excuse for using deadly force qualifies as purposeful provocation that bars self-defense.
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…Subdivision (1) contains certain exceptions to this general authorization to use force, such as where the actor himself was the initial aggressor. [^maj-4]: Section 35.15 (2) (a) further provides, however, that even under these circumstances a person ordinarily must retreat “if he knows that he can with complete safety as to himself…