Subtitle The St. Valentine's Day Massacre «360p»

The brutality of the massacre and the use of submachine guns directly influenced the passage of the National Firearms Act of 1934 .

The was the execution-style murder of seven members and associates of the North Side Gang in Chicago on February 14, 1929 . The event is widely regarded as the most infamous gangland killing of the Prohibition era, marking a decisive shift in power toward Al Capone and his South Side Gang . Event Overview subtitle The St. Valentine's Day Massacre

Moran’s second-in-command.