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".
The international criminal organization of Sicilian origin operating in Italy and the United States.
The Mafia: any particular mafia, mentioned uniquely within the discussion's established or implicit context, usually and especially the Sicilian–Italian–Italian-American one (especially in American English) but occasionally others (e.g., the Russian one, the Japanese one).
The masses, especially the 'great unwashed masses': the general population, or (yet more specifically) the rabble thereof, viewed as one mob of unruly, disorganized people predisposed to violence and malevolence.