Justifiable homicide


The concept of justifiable homicide in criminal law is a defense to culpable homicide. Generally, there is a burden to produce exculpatory evidence in the legal defense of justification.
In most countries, a homicide is justified when there is sufficient evidence to disprove the alleged criminal act or wrongdoing. The key to this legal defense is that it was reasonable for the subject, when committing the homicide, to believe that there was an imminent and otherwise unavoidable danger of death or grave bodily harm to the innocent by the deceased.

Definition

Justifiable homicide applies to the blameless killing of a person, such as in self-defense.
The term "legal intervention" is a classification incorporated into the International Classification of Diseases, Tenth Revision, and does not denote the lawfulness or legality of the circumstances surrounding a death caused by law enforcement.
For example, in 2020, legal intervention deaths i.e., deaths caused by law enforcement and other persons with legal authority to use deadly force acting in the line of duty, excluding legal executions, amounted to 1.3% of all 71,000 violence-related deaths in the United States.

Common excusing conditions

Potentially excusing conditions common to multiple jurisdictions include the following.
  1. Capital punishment in places that it is legal.
  2. Where a state is engaged in a war with a legitimate casus belli, a combatant may lawfully kill an enemy combatant so long as that combatant is not hors de combat. This principle is embedded in public international law and has been respected by most states around the world.
  3. In most countries, it is lawful for a citizen to repel violence with violence to protect someone's life or destruction of property.
  4. * The scope of self-defense varies; some jurisdictions have a duty to retreat rule that disallows this defense if it was safe to flee from potential violence. In some jurisdictions, the castle doctrine allows the use of deadly force in self-defense against an intruder in one's home. Other jurisdictions have stand-your-ground laws that allow use of deadly force in self-defense in a vehicle or in public, without a duty to retreat.
  5. Where the person's death as inflicted by the effecting of lawful arrest or prevention of lawfully detained person's escape, quelling riot or insurrection when the use of force is "no more than absolutely necessary".
  6. The doctrine of necessity allows, for example, a surgeon to separate conjoined twins, killing the weaker twin to allow the stronger twin to survive. This is not recognized, for example, in England and Wales.
  7. Several countries, such as the Netherlands, Belgium, Switzerland, Japan, Canada, and the U.S. states of Oregon and Washington allow both active and passive euthanasia by law, if justified.
  8. The "heat of the moment" defense for crimes of passion: death results from a situation where the defendant is deemed to have lost control. This may be considered a part of the defense of provocation against charges of murder. Based on the idea that all individuals may suddenly and unexpectedly lose control when words are spoken or events occur, jurisdictions differ on whether this should be allowed to excuse liability or merely mitigate to a lesser offense such as manslaughter, and under which circumstances this defense can be used. In many common law jurisdictions, provocation is a partial defense that converts what would have been murder into manslaughter.
  9. A few jurisdictions do not prosecute or have a lesser penalty for honor killings.

    European Convention on Human Rights

Article 2 Paragraph 2 of the European Convention On Human Rights provides that death resulted from defending oneself or others, arresting a suspect or fugitive, or suppressing riots or insurrections, will not contravene the Article when the use of force involved is "no more than absolutely necessary":

Criminal Procedure Act in South Africa

In South Africa, §49 Criminal Procedure Act of 1977 provided the following before its amendment in 1998:

In the United States

A non-criminal homicide ruling, usually committed in self-defense or in defense of another, exists under United States law. A homicide may be considered justified if it is done to prevent a very serious crime, such as rape, armed robbery, manslaughter or murder. The victim must reasonably believe, under the totality of the circumstances, that the assailant intended to commit a criminal act that would likely result in the death or life-threatening injury of an innocent person. A homicide performed out of vengeance, or retribution for action in the past, or in pursuit of a "fleeing felon" would not be considered justifiable.
In many states, given a case of self-defense, the defendant is expected to obey a duty to retreat if it is possible to do so. In the states of Alabama, Alaska, Arizona, California, Colorado, Connecticut, Florida, Georgia, Hawaii, Indiana, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Mississippi, Missouri, Montana, New Jersey, North Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas, West Virginia, Washington, Wyoming and other Castle Doctrine states, there is no duty to retreat in certain situations. Preemptive self-defense, in which one kills another on suspicion that the victim might eventually become dangerous, is not justifiable.
In the U.S. Supreme Court ruling of District of Columbia v. Heller, the majority held that the Constitution protected the right to the possession of firearms for the purpose of self-defense "and to use that arm for traditionally lawful purposes, such as self-defense within the home".
Two other forms of justifiable homicide are unique to the prison system: the death penalty and preventing prisoners from escaping. To quote the California Penal Code that covers justifiable homicide:
Although the above text is from California law, many other jurisdictions, like Florida, have similar laws to prevent escapes from custody. Examples include self defense, prevention of criminal act, trespassers, and defense of another person.

Notable cases

  • Killing of Ma'Khia Bryant. Her shooting, which prevented her from stabbing another girl, was later deemed a justifiable homicide with prosecutors noting, "Under Ohio law the use of deadly force by a police officer is justified when there exists an immediate or imminent threat of death or serious bodily injury to the officer or another."
  • Sam Cooke. After an inquest and investigation, the courts ruled Cooke's death to be a justifiable homicide.
  • John Dillinger. When BOI agents moved to arrest Dillinger as he exited the theater, he tried to flee. He was shot in the back; the deadly shot was ruled justifiable homicide.
  • Fred Hampton. In January 1970, the Cook County Coroner held an inquest; the jury concluded that Hampton's and Clark's deaths were justifiable homicides.
  • George Jackson. Miller had not been charged with any crime, as a grand jury ruled his actions during the prison fight justifiable homicide.
  • Don King. In 1954, King shot a man after spotting him trying to rob one of his gambling houses; this incident was ruled a justifiable homicide.
  • Killing of Sara-Nicole Morales. In 2021, Morales confronted several motorists who had followed her to her Florida home following a road rage incident. After she brandished a pistol at them from her front lawn, a motorcyclist she had deliberately struck with her vehicle during the road-rage incident drew his own legally carried weapon and shot her several times; she died shortly after arrival at a local hospital. Police declined to file charges several months later.
  • Eadweard Muybridge. In 1874, Muybridge shot and killed Major Harry Larkyns, his wife's lover, but was acquitted in a controversial jury trial, on the grounds of justifiable homicide.
  • Johnny Stompanato homicide. After four hours of testimony and approximately 25 minutes of deliberation, the jury deemed Stompanato's killing a justifiable homicide.