Pit Bulls have a bad rap, because idiots train the viciousness into them, usually by abusing the dog when it's a puppy, until it essentially goes insane. The issue isn't really the dog, it's the owner, and when an owner trains a dog to be vicious, and then allows it to roam free, the owner should bear the brunt of the responsibility, not the dog. Although in my personal opinion, if the owner can't be bothered to attempt to keep the dog under control, they have no business having a dog in the first place.