If blacks are racist, it is probably mostly in a pro-black way, not anti-white. It is no mystery why they would feel that way. Whites have taught them every possible lesson about racism. Whites in the US have never suffered the humiliation and mistreatment as a 'race' that blacks have so any comparison is laughable.
It is especially sad that people still engage in 'race' discussions as genetically there is only one race. Look it up!
Well, if you can site a code that says it's against the law to discuss race feel free.
After all, we're taking Eric Holder's advice and trying not to be cowardly when not discussing the topic.
Oh, and FYI, being pro-black is in itself an indication of being anti-white. I'm not pro-white. I think favoring one race over another is racism. However, noticing racism does not mean you're a racist.