I equate the pro-pit bull argument with some sort of pro-drunk driving-argument: “Some people are just bad drunk drivers and that’s why these accidents happen. I drive drunk every night and I’ve never had an accident. Punish the bad ones but leave me alone!”
Law enforcement needs to get involved before the next child gets their arms ripped off, not after. “Blame the deed, not the breed” is a slick way of saying “Stop worrying until another catastrophe happens. Just kick the can down the road some more.” I think a combination of muzzle laws and mandatory liability insurance for each vicious dog would be pretty effective. Yes it means a lot more for the cops to deal with but so does mandatory car insurance and laws against drunk driving.