The only people who live in a post-black world are four people who live in a little white house on Pennsylvania Avenue. The idea that America is post-racial or post-black because a man I admire, Barack Obama, is president of the United States, is a joke. And I hope no one will even wonder about this crazy fiction again.

It's not white versus black any more, it's haves versus have-nots. Unless the black middle-classes unite to promote the interests of the black underclass, tension between them is inevitable. What we, the black middle class have to do, is think of a strategy to avert that.

There are two things that have always haunted me: the brutality of the European traders and the stories I've heard about Africans selling other Africans into slavery.

You notice patterns. White guests often are mortified - that word again - when they learn their ancestors owned slaves. But I've never had a black guest who was upset to learn about white ancestry that probably involved forced sexual relations.

Keeping the Union together, freeing slaves and being assassinated all added up to creating 'Lincoln the myth.' He overcame a lot of his own prejudices and became what many would consider the first black man's president.

We really invented the genre of tracing family trees and going back as far as we could on the paper trail. When the paper trail disappeared, we used DNA analysis. The technology was just being invented that allowed you to trace ancestry through DNA.

But you see, our society is still trapped in this binary, black/white logic and that has had some very positive implications for our generation. It's had some very negative ones as well and one of the negative ones is that it creates enormous identity problems for people who have one black ancestor and all white ancestors for example.