Writer at Breitbart's Big Hollywood: “why, in 2009 America, are mulattoes invariably identified as blacks?”

From an Oct. 22 post by Burt Prelutsky at Andrew Breitbart's Big Hollywood blog:

My final question is, why, in 2009 America, are mulattoes invariably identified as blacks? Surely there is nothing wrong with being a mulatto. There is no stigma attached, as once there was. It merely refers to those who have one white parent and one black. There are many notable individuals who are mulattoes, including Halle Berry, Derek Jeter, Lisa Bonet and Barack Obama. Tiger Woods, on the other hand, is a true amalgamation, being one-quarter Chinese, one-quarter Thai, one-quarter black, one-eighth Native American and one-eighth Dutch. And, yet, with the possible exception of the New York Yankee shortstop, we insist on identifying all of them as black.

It's as if there is something shameful about their being half or even one-eighth white. If there is, I'd sure like to know what it is. If, on the other hand, there isn't, why do we insist on acting as if there were?

Previously:

Breitbart's Big Hollywood: Same old birtherism, comparisons of Obama to Hitler

Conservative media unleash violent, revolutionary rhetoric