I think they do know. They problem is the Rambo gun nuts who won't reduce the number of guns. It's like as if they were castrated.
Gun violence will continue because basically Americans are very low IQ people. They've been fed a steady diet by republican govts that guns are required for their freedoms. As if USA discovered freedom.
The country hasn't evolved far from the wild West days. Then they added religion which gave the divine permission to kill their enemies and the best goes on.give the idiots more guns and blast the shyt out of themselves. To keep them is no use, to lose them is no loss.