1972 Harlem mosque incident
The 1972 Harlem mosque attack occurred on April 14, 1972, when a New York City Police Department (NYPD) officer was shot and fatally wounded at the Nation of Islam Mosque No. 7 in Harlem, Manhattan, New York City, United States.
Source: Wikipedia — 1972 Harlem mosque incident (CC BY-SA 4.0)