Broken windows theory

In criminology, the broken windows theory states that visible signs of crime, antisocial behavior and civil disorder create an urban environment that encourages further crime and disorder, including serious crimes. The theory suggests that policing methods that target minor crimes, such as vandalism, loitering, public drinking and fare evasion, help to create an atmosphere of order and lawfulness.

The theory was introduced in an article started in 1981 and published in 1982 by social scientists James Q. Wilson and George L. Kelling. It was popularized in the 1990s by New York City police commissioner William Bratton, whose policing policies were influenced by the theory.

The theory became subject to debate both within the social sciences and the public sphere. Broken windows policing has been enforced with successful but controversial police practices, such as the frequent use of stop-and-frisk in New York City in the decade up to 2013.