Pit Bulls & Rottweilers don't have an aggressive nature towards humans, neither like dogs. I've owned both for years and never had a problem out of either breed. The media has made these breeds into monsters because when they do attack they can cause so much damage. It's not the number of attacks. Dalmations, Poodles, and Chihuahas, just to name a few, have worse temperments than Pitts or Rotts.
I have three small children and, although I'd never leave them alone at this age with them, they were great with the dogs. Small children harass dogs by pulling ears and tails and pinching & hitting. That's, usually, why Pitts & Rotts, as well as small and medium breeds, sometimes attack small children. It's the parents responsibility in those cases to teach the child that's not right.
In this case I think it's, obviously, a result of bad parenting and dog ownership. It matters how you treat & raise these dogs as to how they'll react to children's harassment or act out their frustration/anger to any humans. You can't lump every dog from one breed in together. Dogs, as humans, all have different personalities. Some are born mean, most aren't. Some that aren't are turned by bad owners!
I hate when I hear "Oh it was a Pitt/Rott that explains why they were attacked. It's in their nature". That's totally false. Yes, it happens but it's no more common that other dogs. It may seem like it because we only hear about the large dogs attacking because they do so much damage or kill.
They're extremely loyal and protective dogs. It's usually the dogs treated, or raised, poorly by the owners that attack. Pitts and Rotts that are fought attack much more than the ones that don't.
If there was ever an instance where one of my dogs gets out of line with any memeber of my family, it would be gone. But, I don't see it happening because of the way I raised them.
I disagree. See above.