organized crime Canada Rivard organization Red Scorpions Bacon Brothers Irish Mob West End Gang Dubois Brothers Indo-Canadian organized crime Italian-Canadian Mafia families Cosa Nostra Rizzuto crime family Cuntrera-Caruana Mafia clan Cotroni crime family 'Ndrangheta Luppino crime family Musitano crime family Papalia crime family Siderno Group Commisso 'ndrina United States National Crime Syndicate Seven Group Murder, Inc. Prohibition-era gangs Galveston Downtown Gang Beach Gang Sam Maceo's Organisation Broadway Mob The Lanzetta Brothers Shelton Brothers Gang Sheldon Gang Circus Cafe Gang Wandering Family Polish Mob Saltis-McErlane Gang Kielbasa Posse The Greenpoint Crew Flats Mob The Flathead gang Dixie Mafia Cornbread Mafia State Line Mob Wall gang Greek-American organized crime Philadelphia Greek Mob Velentzas Family Hispanic-American Marielitos The Corporation Puerto Rican mafia Agosto organization La ONU Solano organization Negri organization Márquez gambling ring Polanco-Rodriguez organization Assyrian/Chaldean mafia Hawaii The Company Leota mob Los Angeles (See also Rampart scandal) Nash gang Wonderland Gang Elkins mob Binion mob American Mafia Italian immigrants to the United States in the early 19th century brought with them the underground government many Americans refer to as "Cosa Nostra" (Our Thing) along with its traditions and formal induction rituals along with the concepts and precepts of Omerta, which espouses honorable and manly behavior at all times and under all conditions,taking care your own problems and assisting your community, as well as non-cooperation with corrupt law enforcement and government officials. Many Italian-Americans around this same time also formed various small-time gangs which gradually evolved into sophisticated crime syndicates, but the nationwide organization known as "Cosa Nostra" has traditionally dominated organized crime in America for several decades. Although government crackdowns and a less-tightly knit Italian-American community have largely reduced its power, the American Mafia remains an active force in the underworld Active The Commission The Five Families of New York City Bonanno Indelicato crew The Motion Lounge Crew Colombo Scarpa crew Genovese 116th Street Crew Greenwich Village Crew New Jersey Crew Gambino Ozone Park Boys DeMeo crew Baltimore Crew South Florida faction New Jersey faction The Bergin Crew Cherry Hill Gambinos Lucchese The Jersey Crew The Vario Crew 107th Street gang Magaddino crime family DeCavalcante crime family The Chicago Outfit (see also Unione Siciliane) Philadelphia crime family Pittsburgh crime family Patriarca crime family Angiulo Brothers crew Cleveland crime family Los Angeles crime family Kansas City crime family Cleveland crime family Trafficante crime family Detroit Partnership Milwaukee crime family Defunct Morello crime family