*scratches head on this one*
The bulk of your Admissions Council folx are gonna be of the Caucasian Persuasion. How many of them really understand the whole "Light v. Dark" "Jiggaboo v. Wannabe" dichotomy between people of color?
I think your PS should focus on telling a simple story that ANYBODY could understand. If you were writing a thesis paper on the topic, then that'd be cool, but you really ain't tryin' to educate anybody within' those 2 pages (Double spaced) that you have to write.