What does 187 mean? The 187 police code explained.
It is not radio slang - 187 is California Penal Code section 187, the murder statute, borrowed by police scanners and three decades of hip-hop. What the section actually says is more precise than the mythology.
What 187 means.
187 means murder. That is the whole of it: the 187 meaning comes from California Penal Code section 187, which defines murder as the unlawful killing of a human being, or a fetus, with malice aforethought. So when someone asks what does 187 mean, the definition of 187 is not slang at all - it is a statute number that became slang. Define 187 and you are simply reading section 187 of the California Penal Code.
The number travels further than the law does. California is the only state where 187 is the murder code; New York prosecutes murder under Penal Law 125.25, and the federal system under 18 U.S.C. § 1111. N.W.A, Sublime, and the film One Eight Seven carried the number into the culture, and now it is shorthand nationwide even in states whose murder statutes carry entirely different numbers. The number is Californian; the concept travels.
187 as a police code.
The 187 police code meaning is the same as the statute’s: on a scanner, police code 187 meaning a homicide is a dispatcher or officer naming the statute rather than describing the scene - police code 187 is not a radio ten-code like 10-4, it is a penal code citation used as shorthand. That is why the 187 cop code sounds official and yet appears in no ten-code chart: what you are hearing is a section number. In departments outside California, 187 code police usage is borrowed convention rather than local law.
The section behind the slang.
Penal Code 187 defines murder in California: the unlawful killing of a human being, or a fetus, with malice aforethought. Officers reporting a “187” are naming that statute. The mythology came later - N.W.A, Sublime, and “One Eight Seven” the film moved the number into the culture, and now the code is shorthand nationwide even in states whose murder statutes carry entirely different numbers. New York prosecutes murder under Penal Law 125.25; the federal system under 18 U.S.C. § 1111. The number is Californian; the concept travels.
What 187 actually charges.
Malice aforethought splits the statute into degrees. First-degree murder - willful, deliberate, premeditated killings, plus felony-murder killings during enumerated felonies - carries twenty-five to life, and life without parole or capital exposure with special circumstances. Second degree - malice without premeditation - carries fifteen to life. California’s felony-murder rule was narrowed dramatically by SB 1437: accomplices who neither killed nor intended to kill, and were not major participants acting with reckless indifference, can no longer be convicted of murder for a co-defendant’s act - and people already serving those sentences can petition for resentencing under § 1172.6. That amendment quietly reopened thousands of cases.
How murder cases are actually defended.
Degree and malice are the battlefield: self-defense and imperfect self-defense, heat of passion reducing to voluntary manslaughter, accident and misfortune, identity and alibi in whodunit cases, and forensic war over cause and time of death. Modern California murder defense adds the statutory layer - SB 1437 petitions, youthful-offender parole, felony-murder resentencing. Federal murder charges (§ 1111 - on federal land, of federal officials, or in furtherance of other federal crimes) run parallel doctrine with federal sentencing. Homicide files are trial files - they get staffed, funded, and prepared like nothing else in the building.
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