I love pitbulls. They are sweet and loving and loyal as hell, if not raised and trained by idiots who prep them for the pit.
They can be good dogs, when handled by a forceful nature. However, I think it is also possible that some have been badly bred and they have unstable personalities.
Why do you say the Guerreros are involved in dog fighting?
Many of these breeds were originally developed as fighting dogs from cross breeding bull-baiting dogs (used to hold the faces and heads of larger animals such as bulls) and terriers. HEH HEH