Check yo factz, Eminem.
🔘 Capone & Co and the St Valentine's Day Massacre IS why the National Firearms Act was passed in the first place.
🔘 While in the 1920s and 30s machine gun mass shootings, mass murders, and other murders and injuries skyrocketed thanks mainly to Mobsters, they plummeted after, as witnessed by the number of civilian machine gun killings occuring today.
Want to hazard a big juicy guess as to why?
(And no, it wasn't on account of those "lunatic" Indians no longer getting in the way of the bullets of those kindly Christian settlers and the US Cavalry)
Not only is your argument bogus, it countradicts the very point you try & fail to make.