Wanna know what REALLY deters gun violence by small-penis psychos?
The worry that someone else might have a bigger penis...er gun and stop them before they can finish their goal.
What's the point in planning a major macho show with you as the BIG MAN WITH THE ONLY GUN IN TOWN, if some little girl can stop you with her own gun?
Columbine could not have happened without gun control.
Luby's Cafeteria would not have happened.
V-Tech wouldn't have happened.
9-11 wouldn't have happened.
Deterrence is the ability to kill the person planning to do bad things.
Prevention, which what you're describing...doesn't work.