What criteria must a gang, criminal organization, or just a crime group in general meet to be considered a "true Mafia" or mob or "Mafia-type" group? Clearly defined hierarchy with ranking system? Initiation rituals? I've often seen literature saying that the so-called Irish, Albanian, Jewish, even Russian mobs aren't true mobs or "mafias," so to speak, because they lack the defining criteria that makes the Mob the Mob, so to speak. I'm sure groups like the Triads, Yakuza, Ndrangheta, Cosa Nostra, LCN, and Camorra fit the bill. But then with regards to the Camorra, it would seem that only those clans with Cosa Nostra or Ndrangheta influence for instance, would be. Any thoughts?