Don't forget they did the same thing in UK too. Then the thugs armed themselves with baseball bats, and knives. Then, the UK almost banned most knives. That got stopped by the finest chefs in the UK.
Gun bans don't end violence. They promote it. The DoJ crime statistics prove it, the crime stats from other nations also proves the stupidity of "gun control" when you compare the same rates to nations like Switzerland where the populace is armed, and trained, on how to use firearms.
You can't fix stupid. We just have to try and cut it off before it cripples us.