Since no one has answered:
The guy Capone killed was Joe Howard, a local gangster who slapped around Jake (Greasy Thumb) Guzik, Capone's close pal, and then insulted Capone when he confronted Howard.
Q. (Timely one): Which Don was known for his Fourth of July fireworks displays?


Ntra la porta tua lu sangu � sparsu,
E nun me mporta si ce muoru accisu...
E s'iddu muoru e vaju mparadisu
Si nun ce truovo a ttia, mancu ce trasu.