Who's the boss?

On this date in 1928 Mafia boss Salvatore D’Aquila, said by his family to be a cheese importer, was at a doctor’s office in the East Village. While his family was inside, he returned to the street to inspect the engine of his car. According to a witness, D’Aquila was looking under his hood when three men approached him. The quartet conversed for a number of minutes. The conversation escalated into an argument. Suddenly, the three men drew pistols and fired a total of nine shots into the gangster killing him.