Just like poor parenting had no basis on kids in youth detention and worse, prisons. I am not going to disagree that one species is more aggressive than another in their influential ease of aggressive training, but leaving a kid to be influenced by the street is no different than those who think it is cute to see a puppy being aggressive.
The saying that kids learn what they live is equally applicable in the case of "training" animals. But just as equally, common sense is far too many times neglected while they are smarter than that little voice inside ones self.
Here we go.
With all due respect, they were BRED to be vicious. It is in their genetic makeup. Why do people consistently ignore that little fact, all the while hand-waving over story after story of these beasts chewing toddlers to pieces?...or in this case, a young adult woman?