A gun can't go off on its own. A pitbull will. And, they were bred to fight from day one. Even some of the rescue groups will admit that.
They're wild animals that shouldnt be among civilization and should be put down. Every single one of them.
And what are pit bulls bred with? Aggressive breeds like the Chihuahuas.
Notwithstanding that aggressivity is what is needed in a defense dog, if aggressivity is to be bred out of dogs, the start erradicating the Chihuahuas too.