I found a 1999 article from the
City Journal that elaborates a bit on the pit bull issue.
I don't know if more assholes have pit bulls, or if they are just the ones who get noticed more? Every now and again you do run across information from a breed
advocate who really loves pits, treats his well, and works to enhance the positive qualities of the breed.
Unfortunately, in the 'hood, those are not the qualities which make a desired animal.