CALCRIM No. 571

Defense of Another—Lesser Included Offense (Pen. Code, § 192)

A killing that would otherwise be murder is reduced to voluntary

manslaughter if the defendant killed a person because (he/she) acted in

(imperfect self-defense/ [or] imperfect defense of another).

If you conclude the defendant acted in complete (self-defense/ [or]

defense of another), (his/her) action was lawful and you must find (him/

her) not guilty of any crime. The difference between complete

(self-defense/ [or] defense of another) and (imperfect self-defense/ [or]

imperfect defense of another) depends on whether the defendant’s belief

in the need to use deadly force was reasonable.

The defendant acted in (imperfect self-defense/ [or] imperfect defense of

another) if:

1. The defendant actually believed that (he/she/ [or] someone else/

<insert name of third party>) was in imminent

danger of being killed or suffering great bodily injury;

AND

2. The defendant actually believed that the immediate use of deadly

force was necessary to defend against the danger;

BUT

3. At least one of those beliefs was unreasonable.

[If the defendant used more force than was reasonable to defend against

the defendant’s perceived danger, the defendant did not act in (imperfect

self-defense/[or] imperfect defense of another).]

Belief in future harm is not sufficient, no matter how great or how likely

the harm is believed to be.

In evaluating the defendant’s beliefs, consider all the circumstances as

they were known and appeared to the defendant.

<The following definition may be given if requested.>

[Danger is imminent if, when the defendant used [deadly] force, the

danger actually existed or the defendant actually believed it existed. The

danger must seem immediate and present, so that it must be instantly

dealt with. It may not be merely prospective or in the near future.]

[Imperfect self-defense does not apply when the defendant, through (his/

her) own wrongful conduct, has created circumstances that justify (his/

her) adversary’s use of force.]

[If you find that <insert name of decedent/victim> threatened

or harmed the defendant [or others] in the past, you may consider that

information in evaluating the defendant’s beliefs.]

[If you find that the defendant knew that <insert name of

decedent/victim> had threatened or harmed others in the past, you may

consider that information in evaluating the defendant’s beliefs.]

[If you find that the defendant received a threat from someone else that

(he/she) associated with <insert name of decedent/victim>,

you may consider that threat in evaluating the defendant’s beliefs.]

[Great bodily injury means significant or substantial physical injury. It is

an injury that is greater than moderate harm.]

The People have the burden of proving beyond a reasonable doubt that

the defendant was not acting in (imperfect self-defense/ [or] imperfect

defense of another). If the People have not met this burden, you must

find the defendant not guilty of murder.

New January 2006; Revised August 2012, February 2015, September 2020, March

2022, September 2022, March 2024,* February 2025, October 2025, February 2026

* Denotes changes only to bench notes and other commentaries.