February 14, 2019 marks the 90 year anniversary of the bloody Valentine's Day Massacre at a warehouse on the North Side of Chicago, widely accepted to have been orchestrated by Al 'Scarface' Capone (top, right) although no one was ever convicted. By 1929, disputes over territory and the bootlegging industry had reached fever pitch and Capone wanted to strike a decisive blow against his arch-rival Bugs Moran (bottom, right) and the North Side Gang. At 10.30am, four of Capone's men from the Chicago Outfit, two disguised as uniformed policemen, headed into a North Side warehouse where they ordered seven of Moran's associates to line up against the wall. Thinking they were being arrested, the gangsters complied. Capone's gang sprayed them with 100 bullets from their Thompson machine guns. The crime went unsolved because authorities weren't able to officially connect Capone with any substantial evidence; the case remains unsolved to this day – but he is widely accepted to have been responsible.