"No!!! All breeds are equally dangerous. Bad owners are the reasons for bad behaviour in pit bulls. Also it is just that pitbulls are trained for fighting."
To those who have these opinions. The problem is not that pitbulls are more dangerous. The problem is pitbulls can become aggressive and unpredictable under circumstances, just an any other dog, but the response will not be same as other breeds. With 'perfect care' and 'perfect training' you can even have non-domesticated wild animals as your pets. You just needs a person dedicated to look after it all the time. That is not be feasible for a normal person. If you can hire someone to perfectly train a pitbull from its birth and give it customised training not specific to breed but to individual dog, you may get a pitbull to be under control in normal circumstances. But under perceived threats the behaviour will not be the same.
Mainly the problem is once they get into 'fight mode' they cannot be calmed down. They are bred to fight till death, and have no fear. When you try to calm down a pitbull in this state, you are trying to work against an evolutionary trait that got developed over several decades, if not centuries. Which means you are definitely going to fail
I also want to point out that how the wild part of the dog can surface under stress. Lost Dog Syndrome is an unofficial term given to the behaviour of the dog after getting lost. It is like a feral mode is activated and they won't even responsd to their owners when they found. Bringing back the dog needs several months long, and patient efforts.
Now a personal anecdote. I have a Labrador. Might not be pure bred. But all physical characteristics are there. We live in a rural area, and she grew up not as a perfect indoor dog. From the very young age itself she understood there are other animals in our property, that are not really our frieds. Foxes, monitor lizards, snakes etc. She developed a trait to be protective of us and the property, even without any training. She is not friendly to strangers and will not let anyone to approach her other than the known members of the family. But she have never gotten into a fight with an animal or human. She will just stand guard and ensure they are not allowed to approach us or the house. My vet, who has decades of experience said, he had never seen a Labrador acting so protective and not being friendly to strangers.
In summary, circumstances can influence your dog and it's behaviour. They always have a suppressed wild part in them. Triggers can activate them, and decide how your dog respond to it. And you don't want that kind of trigger happening to a pitbull, because if it happens, that won't stop fighting until it die. It will fight without fear, irrespective of the size of the 'enemy' and know where to target to create maximum damage.
OOTL here. Please give context.