The Young Brothers massacre (sometimes referred to as the Brookline shootout) was a gun battle that occurred outside of Brookline, Missouri (now part of Republic, Missouri) in the Ozarks region on the afternoon of January 2, 1932, during the period known as the "Public Enemy Era". It resulted in the deaths of six law enforcement officers, making it the worst single killing of U.S. police officers in the 20th century.[1]