EntityQ2004508· pop 13· linked from 792 articlesBlack HandSign in to saveextortion racket and the gangs that used itConnectionscrime familyEntityItalianEntityBostonEntityInternational Standard Book NumberEntityBrooklynConceptThe New York TimesEntitydigital object identifierEntitymafiaEntityEnrico CarusoEntityorganized crimeEntityJSTOREntitySouthern ItalyEntitySicilian MafiaEntityextortionEntityNew CastleEntityOmertàEntityfeudEntityFive FamiliesEntitySaint Valentine's Day MassacreEntityAmerican MafiaEntityCategoriesAmerican MafiaItalian-American history