Al Capone batted the guy on the night of St Valentines Day Massacre. after the massacre Capone learned that the guy have plans against him(they're actually two sicilians). Capone hated disloyalty, an offense he never forgave. he hosted a party after the massacre and when midnight comes thats the time he batted the guy. the guy was defenseless coz the have to surrender their guns at the checkroom. its the old Mafia tradition, "Hospitality before Murder."

GoodFella