Ralph Daniello, also known as "The Barber" was an Italian-born New York criminal who belonged to the Brooklyn Navy Street Gang and participated in a major gang slaying in the Mafia-Camorra War. In 1917, Daniello eventually became an informant for the New York police and helped destroy the Camorra crime gangs in Brooklyn. Daniello's testimony helped to clear up 23 homicide cases in New York.

The Brooklyn Camorra or New York Camorra was a loose grouping of early-20th-century organized crime gangs that formed among Italian immigrants originating in Naples and the surrounding Campania region living in Greater New York, particularly in Brooklyn. In the early 20th century, the criminal underworld of New York City consisted largely of Italian Harlem-based Sicilians and groups of Neapolitans from Brooklyn, sometimes referred to as the Brooklyn Camorra, as Neapolitan organized crime is referred to as the Camorra.