TIL In 1992 New York tried to create a review board for NYPD officers accused of misconduct. Thousands of off duty cops responded by breaking through barricades outside of city hall, chanting racial slurs, smashing car windows, attacking pedestrians and blocking traffic across the Brooklyn Bridge.

https://www.nytimes.com/1992/09/17/nyregion/officers-rally-and-dinkins-is-their-target.html