My hypothesis is this: blacks face racism from whites because they're black, whites face racism from blacks because they have been oppressing blacks.
This is a profoundly different viewpoint to mine cocco, and pretty much is the basis of our differences.

You're blaming the white race for the oppression of blacks. This for me is the problem that white people have right now. Some white people feel guilty about historical racism, others say "it's got fuck all to do with me". When you then say to someone "yes it has because you're white", that my friend is racism.