On Valentine’s Day 1929, four men connected with Al Capone’s Chicago gang killed seven rivals with Thompson machine guns, better known as Tommy guns. The bloody massacre shocked the nation ...

VALPARAISO -- Sixty-seven years ago, legendary gangster John Dillinger stormed into banks and peppered the ceilings with bullets from a Thompson machine gun belonging to the Porter County police -- ...

But a more storied use of the “Tommy gun,” as it was dubbed, was employed by minions of Capone, the nattily dressed king of the Chicago underworld in the 1920s and ’30s.

WATCH: Up close and personal with the bump stock: 'Machine gun' or firearm toy? ABC News Live Prime, Feb. 27, 7 p.m. and 9 p.m. ET, streaming on Hulu or the ABC News app.

But a more storied use of the “Tommy gun,” as it was dubbed, was employed by minions of Capone, the nattily dressed king of the Chicago underworld in the 1920s and ’30s.

On Valentine’s Day 1929, four men connected with Al Capone’s Chicago gang killed seven rivals with Thompson machine guns, better known as Tommy guns. The bloody massacre shocked the nation, making ...