It is largely based on history. As a white culture, we still feel the sting of segregation and the like, so white people have this huge guilt trip laid on them and are deathly afraid of being called racists, so most criticism directed toward minorities is stifled.
he's got no right to say anything to anyone, as far as i'm concerned with all the crap thats come out of his mouth over the years and the so called hip hop rap talking about killing people that he says nothing about, and all the other BS going around the world thru the news , it's a small world any more and some bad thing people bring upon them selves.