I am not nearly as well versed as many of you on here (SC, Trumbull), but I would have to give the nod to Capone or Gotti.
Seeing as how they were way more flashy than the others (Luciano was flashy in his own way, but he was in jail a lot and deported back to Italy a long time ago).....
Finance is a gun, Politics is knowing when to pull the trigger.
