Authentically black?

I was reading an article on how tough it is to be black and found a quote that...well, it puzzled me.

"Most black men are able to shift from a sort of relaxed, authentically black pose into a respectable black man pose. Either they develop the dexterity to move back and forth or ultimately they flounder."

Authentically black? I didn't know races had certain poses that were more authentic than others. But then, maybe that's because I'm authentically white, making me authentically racist in my perspective, right?

(Oh, and that quote came from a political scientist at the University of Chicago. Explains a lot....)