I wasn't implying that they're all drug dealers' dogs... the point I was making is that the breed is heavily favored by criminals & associated groups that desire an aggressive dog. These groups influence pit bull breeders, who in turn select for aggression, but these same breeders also sell to people who don't associate with such groups and might be unaware of these breeders' practices.

When I say aggression, I usually mean aggression specifically towards people, which seems to be peculiarly intense in pit bulls. Aggression towards other dogs is a given for any dogfighting breed.

I didn't say pit bulls have a reputation for being unaggressive... did you even bother to read what I actually said? I said ‘pit bulls’ that have such a reputation are unlikely to actually be purebred pitbulls, since one would expect modern purebreds to be aggressive, and this might include the dogs I've met that I assumed were pit bulls.

I'm not sure what the point is of the last study you linked.