It's a ghetto thing. Rottweilers, too. There are "ghetto cool" . The preferred dogs of gang members. That's why
I was at a town fair where some old, weak woman wanted to parade a dog that was even more ugly and massive than a pit—there are other fighting dog breeds around, but it still had the big muscled head with eyes like a pig’s—on this skinny little leash. One lunge and that dog would have been loose, among lots of kids and normal pooches—I believe she brought the monster for no other reason than to look tough and dangerous.