The Gennas became a close knit Marsala-based Mafia and bootlegging gang. In 1919, the Gennas obtained a federal license to legally manufacture industrial alcohol, which they sold illegally. Angelo and his brothers operated from
Chicago's Little Italy, which was located west of the
Chicago Loop. They started selling their extra alcohol at cut-rate prices outside of their territory. This caused a problem with the
North Side Gang leader
Dean O'Banion, who went to
South Side Gang leader
John "Johnny the Fox" Torrio and
Unione Siciliana boss
Mike Merlo to get the Gennas to back down. When Torrio refused, O'Banion began hijacking shipments of alcohol belonging to the Genna brothers. On November 3, 1924, Dean O'Banion inadvertently signed his own death warrant during an argumentative phone call to arch-rival Angelo Genna. Their disagreement originated at
The Ship, the gambling casino that the North Side gang boss owned along with the Torrio Syndicate. On this day, O'Banion sat in with Al Capone,
Frank Nitti,
Frank Rio, and others to tally the week's profits. It was mentioned that Angelo Genna had dropped a large amount of cash, plus a sizable marker. Capone recommended that they cancel the marker as a professional courtesy. O'Banion, instead, got Genna on the telephone and demanded that he pay his debt within a week. With this personal insult, Angelo Genna and his family could no longer be restrained. Until then, Merlo and the Unione had refused to sanction a hit on O'Banion. However, Merlo had terminal
cancer and died on November 8, 1924. With Merlo gone, the Gennas and South Siders were free to move on O'Banion. Torrio ordered the Gennas to murder O'Banion; the brothers carried out the hit on November 10, 1924. == Gang war and death ==