A fellow named Armando Perez is a rapper who took part in the "Anger Management Tour" and had a top single named "Culo" (Translated 'ass') Mr. Perez goes by the stage name Pitbull.
Then's there's the aggressive guy or gal in any organization. They are a real "pit bull" , aren't they.
Rightly or wrongly the name and the breed are and forever will be a metaphor for bad behavior. So with that said, I understand some pit bulls are great with kids and I know it was a German Shepherd that killed the Yorkie last week on Mechanic Street.
As long as entertainers name themselves Pitbull, the image won't change.
Pitbull (entertainer) - Wikipedia, the free encyclopedia