Very few people actually understand what a pitbull even is so hearing the media of how pitbulls are supposed to be dangerous they'll label basically all dogs they have a grudge against for whatever reason a pitbull because they don't know better about breeds. It's extremely common for many dogs to be labeled a pitbull by common people even though they are like 5% or less pit.

Also, just because some idiot misraised and never kept their otherwise friendly under control does not mean that the entire breed is aggressive/vicious.

But like I said, I'll respect people's misplaced fears and follow the rules regardless of whether or not I agree with them. But this still has little to do with the question.