Blah, Blah, Blah ...
Most blacks have figured out two very weird and subtle tricks to avoiding incarceration: 1.) Don't commit crimes; 2.) Don't hang out with people who do.
If his point is that criminals who happen to be black should be let off because of their skin color, Hades, NO!!!
If his point is that criminals who happen to be white are let off because of their skin color, and he can prove it, I'd gladly see that fixed. OTOH, if the seeming disproportion reflects a reality that blacks commit crimes disproportionately, that's a (sub)cultural problem blacks need to face and work to correct (blacks, because many have made it abundantly clear they will refuse such assistance from whites).
If I'm a criminal's target, I really don't care about the criminal's skin color.