Does Don King Only Exploit Black Boxers?

Don King, He seems to tend to prefer to rip of his own kind more than others, Lets see: Muhammad Ali Larry Holmes Tim Witherspoon Earnie Shavers Jeff Merritt Zab Judah Ken Norton Terry Noris Lennox Lewis The above are fighters that claim to have been exploited by King there are alot more but you can see what I am trying to say. Now how many Non- Black boxers claim they were exploited? Kotelnik? Trinidad? Mayorga? Chavez Snr? Hector Comacho? Barrera? Valuev? "He did more bad to black fighters than any white promoter ever in the history of boxing,"- Mike Tyson