1900s in organized crime
events of the 1900s in organized crime

This is a list of organized crime in the 1900s, arranged chronologically.
1900
Events
Monk Eastman claims New York's East Side for the Eastman Gang, now numbering an estimated 1,100. This eventually begins a gang war between the Eastmans and Paul Kelly's Five Points Gang.
Evidence of La Mano Nera (The Black Hand), an Italian extortionist organization, is seen in Brooklyn, New York.
Sicilian Mafia Don Vito Cascio Ferro [Cascioferro] arrives in New York to become a major leader of La Mano Nera (The Black Hand).
A gang war begins between Tom Lee's On Leong Tong and an alliance of Wong Gets Hip Sings and Mock Duck's Four Brothers over gambling interests in New York's Chinatown. The war continues until a peace treaty is signed in 1909.
Births
January 7 – Simone Scozzari, underboss of the Los Angeles crime family
January 16 - Richard Lonergan, final leader of the White Hand Gang
March 18 – Ferdinand Boccia, New York City mobster
June 28 – Sam Mesi, Chicago (West Side) mobster and operator of three off-track betting operations
July 2 – Michael "Trigger Mike" Coppola, caporegime of the 116th Street Crew
October 12 – William Morris Bioff, Mafia extortionist
1901
Events
The Olympis Café, a dive bar in Chicago's Whiskey Row vice district, is opened by Sime Tuckhorn and quickly becomes frequented by the city's white slavery traders.
Summer – Monk Eastman, while traveling through the Bowery, is attacked near Chatham Square by several members of the Five Points Gang. Eastman, armed only with brass knuckles and a slingshot, manages to fight them off knocking out three of the attackers before being shot twice in the stomach by the fourth member.
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