High Quality Content by WIKIPEDIA articles! The Mafia-Camorra War was a gang war in New York City during the World War I era. One side was the Sicilian Morello crime family of Manhattan, the other side was Camorra, an ancient Neapolitan gang with a subgroup in the vicinity of Navy Street in Brooklyn, and the Coney Island gang. The gang war lasted from 1914 through 1917 and the trials of 1918.