 Some members of criminal gangs are "jumped in" (by going through a process of initiation), or have to prove their loyalty and right to belong by committing certain acts, usually theft or violence.A member of a gang may be called a "gangster", or, less specifically, a "thug".A number of gangs have gained notoriety in the course of history, including Italian Mafia, the Russian mafia, the French mafia, the Irish mob, the Jewish mob, the Triads and crime syndicates in East Asia, the Jamaican Yardies, the African-American Bloods and Crips, Latino gangs such as the Latin Kings, MS-13, Norteños and Sureños, Caucasian gangs such as the Aryan Brotherhood, Aryan Nations and biker gangs like Hells Angels and Comanchero.