The St. Valentine's Day Massacre remains the most infamous gangster killing of the Prohibition era. The massacre made Al Capone a national celebrity as well as brought him the surplus attention of the federal government.
Saint Valentine's Day Massacre is the name given to the 1929 murder of seven mob associates as part of a prohibition era conflict between two powerful criminal gangs in Chicago: the South Side Italian gang led by Al Capone and the North Side Irish gang led by Bugs Moran. Former members of the Egan's Rats gang were also suspected of having played a significant role in the incident, assisting Capone
Al Capone (a.k.a. 'Scarface'), one of the most famous American gangsters, rose to infamy as the leader of the Chicago mafia during the Prohibition era. Before being sent to Alcatraz Prison in 1931 from a tax evasion conviction, he had amassed a personal fortune estimated at $100 million dollars and was responsible for countless murders.