Mafia

The international criminal organization of Sicilian origin operating in Italy and the United States.

Any other specific organized crime syndicate operating internationally in high-level organized crime; often with a modifying adjective, such as a nationality.

A party game modelling a conflict between an informed minority (the mafia) and an uninformed majority (the innocents). Each player is secretly assigned a role within one of these teams, and the innocents attempt to identify the mafia members before they are all "murdered".