Some of Banksy's work in Manhattan. His work often has a satirical, political, social message. Banksy's true identity is still unknown. Photo courtesy of Banksy's Instagram @banksyny.

Graffiti: Art to Some, Vandalism to Others

A 1982 article by social scientists James Wilson and George Kelling introduced an idea commonly known as “the Broken Windows Theory.”

The theory claims if urban environments are well-maintained and small crimes and vandalism are prosecuted, decreases in the overall crime rate will follow.