Thinking more about this, It really makes you realize how much the irresponsible owners are at fault. I still feel that there is some agressiveness to the pitbull, they were a mix of bulldog and terrier, and I'm just not a real big terrier fan, I've had too many of them latch onto my ankles unprovoked. I'm sure you'd see more agressive yorkies out there than you would american pit bull terriers. Even though they may love people and are less agressive than some breeds, the real problem is the people who own them need to exercise extra vigilence since as it turns out they are actually really good at fighting. Yorkie=Squirt gun, Pit Bull= a .357 In the wrong hands they're dangerous. It does suck that the breed bans are yet another example of the government's attempts to protect us from ourselves.
Good article (didn't know this stuff):
http://www.canismajor.com/dog/amerpit.htmlOnce bull baiting was banned, dog breeders who appreciated the fierceness, courage, and tenacity of the bull dogs turned their attentions to breeding dogs for dog fighting. They began with the bull dog, mixed in some terrier blood, and produced the Bull and Terrier, a dog that met all of their expectations. The Bull and Terrier was bred for aggression to other dogs, unrelenting bravery, a high pain threshold, a willingness to fight to the end, and an affection for people.
ps: American Temperament Test Society Breed Statistics: (interesting stuff)
http://www.atts.org/statistics.html