According to this link
describing his TV show, the good "Judge" Mathis is a former gang member. I use the term "former" very loosely, seeing that he can immediately turn into his former self at a drop of a hat. It states that "he turned his life around". Yep, now he is in the extortion racket along with Jackson.
A black man who really turns their life around is one that goes from being an "affirmative-action" liberal that extolls the virtues of Jackson, Sharpton, etc. to a conservative who sees these people for the phonies that they are.