people sharing some social relation

an association of criminals

the criminal class

organized crime in Japan; an alliance of criminal organizations and illegal enterprises

a secret terrorist group in Sicily; originally opposed tyranny but evolved into a criminal organization in the middle of the 19th century

a secret terrorist society in the United States early in the 20th century

a secret society in Naples notorious for violence and blackmail

a loose affiliation of gangsters in charge of organized criminal activities

an association of criminals

the criminal class