There is a scene from the movie, "The Roaring Twenties" (1939, starring James Cagney and Humprey Bogart-1st degree!!) in which an Italian mob hit involves a shootout in a restaurant. Hiding under checkered tablecloths.
Purple Gang: operated out of Detroit 1910s-1932. Jewish bootleggers & hijackers.
BTW: October 29,1929, Black Tuesday. 16.5 Million shares change hands in a single day" As of 2014, the average was 5.7 billion shares.