Also known as:justifiable homicide · justified homicide
Written by attorneys · grounded in primary & secondary sources — see below
A category of homicide at common law consisting of killings that the law expressly commanded or authorized.
Sources & Authorities
How it applies
Common Examples
2
Officer Executes Lawful Warrant
Justin Jarvis, a sheriff, receives a valid court order to carry out a capital sentence on a convicted murderer. He performs the execution precisely as directed by the warrant. Because the law expressly commanded the killing, the act falls into the category of justifiable homicide rather than excusable or criminal homicide.
Soldier Follows Combat Orders
Jacob Jennings, an infantry soldier under lawful military command during declared hostilities, shoots and kills an enemy combatant who is advancing on his unit. The order to engage the enemy was issued by a superior officer acting within his authority. The killing therefore qualifies as justifiable homicide because it was expressly authorized by law.
Select any source to read its text and confirm it supports the definition.
Common Law
Course Outlines
Mullaney v. Wilbur421 U.S. 684, 95 S.Ct. 1881, 44 L.Ed.2d 508 (1975)
Common questions
Frequently Asked
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What distinguishes justifiable homicide from excusable homicide at common law?+
Justifiable homicide covers killings the law expressly commanded or authorized. Excusable homicide covers killings for which the law recognizes a defense that eliminates criminal liability. Criminal homicide is the residual category of all other unlawful killings.
Supporting sources
Does an internal company emergency protocol authorize a killing as justifiable homicide?+
No. An internal corporate guideline lacks the force of law required for classification as justifiable homicide. The killing remains criminal homicide unless a recognized defense such as necessity excuses it under the excusable category.
Supporting sources
When does a private security officer's use of deadly force qualify as justifiable homicide?+
It qualifies only if the law expressly commands or authorizes the killing. Employment duties to protect property or guests do not supply the required legal command, so the killing is criminal homicide unless a separate defense renders it excusable.
Supporting sources
Can fear of piracy alone turn a shooting into justifiable homicide?+
No. Generalized advisories without an actual imminent threat or legal command to fire do not authorize the killing. The homicide is therefore criminal because it fits neither the justifiable nor excusable category.
Supporting sources
526 P.2d 241 (Cal. 1974)Criminal Law
…damages case in which a proprietor, secreted inside his premises at night, shot intruders without warning and the court found justifiable homicide under section 197. That case differs on its facts from the present one: among other things, the proprietor was present and secreted inside, whereas here no one but the would-be burglars was…