I take it personally because it is personal. My dog can be easily mistaken for a Pit Bull, I am lucky that in QLD laws have been put in place to say that American Staffordshire Terriers can not be classified as an American Pit Bull Terrier. If they weren't in place regardless of how well behaved my dog is, he would be in danger of being seized and put down.
The laws in place at the moment are pointless. They do nothing and will never do anything to help reduce bit rates. The only thing that will is owner education. Until the government realise that breed specific legislation is as worthless as the paper it is written on people will continue to be bitten. Governments around the world are quickly realising this though and removing BSL. Ours won't because of all the people that believe it actually does anything will have a cry.
A well bred American Pit Bull Terrier (its actual breed name) should never show any human aggression. We do not know the series of events that led to that dog going on a rampage and attacking all of those people. For every action there is a reaction - with dogs the reaction is to defend itself.