Certain breeds are prone to situations; however, in almost all the stories you read, irresponsible dog owners are to blame.
I was at a cars and coffee event a few weeks ago and a man showed up with a very aggressive pitbull. Over many hours, he lunged at me and many other participants before the owner decided to leave. Once again, irresponsible owner only focused on themselves.
If I was an owner, knowing the reputation that breed, I would not have brought an aggressive dog to a public event and helped to spread that belief of it being an aggressive breed.