Makes me sad, I rehabilitate/advocate for "aggressive" dogs. There are rarely dogs that can't learn or adapt to situations when given the right training, environment, stability and or boundaries. My neighbor's had a dog fighting ring and connections to the Sheriff here many years ago. They had a huge Pitbull they used as a bait dog, one day he had enough and fought back too hard, he killed my neighbor's prize Pitbull and then turned on my neighbor. I heard the commotion and ran outside, I saw him attacking my neighbor, we got him off my neighbor, I grabbed the dog to bring him to my house when I picked him up, he turned on me and started biting my arms and hands but I brought him to my house regardless because I knew they'd kill him. He bit me so many times that I had to go to the emergency room and even have some long term nerve damage.
Everyone told me to shoot this dog, that he was too damaged, that he "had tasted blood" so he'd never be the same etc. I couldn't do that, he'd been through too much not to be given a chance to change. It took me many years of training, muzzling, socialization, love and discipline to help him change. To this day he's never bit another human, he loves my niece and nephew and other kids. He has a doggy wife at my parents home now. He even lives in my home with his bunny sister, he hates her but he knows that attacking/biting is not ok now and he respects that it's my house.
Pitbulls breeds can be hyper focused on children, livestock and prey animals. This can be a really good thing or a really bad thing, depending on their temperament. They're doing nothing wrong by being dogs, they just need guidance on how to focus that energy sometimes.
He's the reason I started volunteering in animal rescue and now do courtroom monitoring and investigations on Animal Cruelty. I've seen the worst of the worst, what humans can do to dogs and how much these dogs can change despite those circumstances. I guess that's part of the reason why I love them like children, they're innocent, they are often mistreated and they can't speak for themselves. I have a soft spot for anyone or anything in that position.