Dogs do not attack people for no reason. Yes, sometimes it might seem that way, but the fact is that, just like most other animals, they only go after humans if they feel threatened, they feel their loved ones are threatened, they are extremely hungry, or they are obeying orders/training. The breed does not matter, despite all the old wives tales so many swallow hook, line and sinker.
You want kill pit bulls and such, I play with them. I ain't got no special powers either...dogs can just sense when someone is not afraid and mean them no harm. If you have fear and hatred of dogs, they will pick it up and you will have a bad day. You just can't hide that stuff.
I wish it was as easy as saying 'deal with your fear', but of course it isn't. So by all means protect yourself....I wish I could prevent you having to do so, but I can't.
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"Let us hope our weapons are never needed --but do not forget what the common people knew when they demanded the Bill of Rights: An armed citizenry is the first defense, the best defense, and the final defense against tyranny. If guns are outlawed, only the government will have guns. Only the police, the secret police, the military, the hired servants of our rulers. Only the government -- and a few outlaws. I intend to be among the outlaws" - Edward Abbey