mania - it's an interesting story, but it doesn't support the idea that some breeds are not more predisposed to attack than others.
Sure, you can make any dog dangerous if you treat them badly enough. That doesn't mean that some dogs aren't more predisposed to aggression because of their breeding.
Y'all keep losing sight of the real discussion, which is whether pit bulls as a breed are pre-disposed to dog aggression. They are. Everyone in this thread that knows anything about dogs agrees with that. Every link that has been posted to other reputable sources supports this claim.
I don't know why people can't handle the idea that some qualities are inherent to the animal, and are not a result of environment. You can breed seedless watermelon. You can breed hybrid tulips. You can breed tiny little toy dogs that sit on little pillows even though generations ago, they were wolves.
So, accept it, people. You CAN breed a dog with dog-aggressive tendencies simply by selecting those dogs with aggressive qualities over many generations of breeding. Pit bulls are the result of that effort.
This is not one of those "gray area" debates, despite some of your best efforts. Pit bulls were bred to be aggressive to other dogs, and it worked. End of story.