Zero and I hope it stays that way. But I believe I already understand your position on guns in America and you're free to have it.
Discussion
A world with guns is a more open and honest world.
Every man or woman who enters and drives a vehicle is an equal. It gives everyone the same power to run someone over or do other malicious acts. But at par, keeps people following the rules of the road.
Guns do the same (psychologically). It levels the playing field where people know each other are equals.