We have a pit mix and I am a very strong breed advocate. Mine has never shown the least bit of people aggression. He has a little bit of dog aggression for some un-neutered males. Jealous they have balls I guess.
Here is a good source on
myths
Owning one is not for everyone. They are energetic, tenacious, demanding of attention dogs. Here's a good summary of
pros and cons.
Chip says "don't fear me, feed me!":