I have volunteered at animal control for quite a while. I have never had a pit try to bite me, but a ton of little rat terrier, chihuahua or daschund mix's have had a go at me. Although I will agree to an extent that dog aggression (not to be confused with human aggression) may have been breed into pits over the last few hundred years, with responsible owners and the proper training, the instincts are easily overcome. Don't be fooled by the media. Bad news gets all the coverage, while the good deeds go unnoticed.