I personally, don't agree with Affirmative Action as I've only been promoted in my occupation based on my performance. (I'm black and I work with a bunch of stupid fucks from "The Valley")
However, I will say this: Taking exception to the practice on the grounds that you don't like the idea of an "under qualified" black person getting hired over a more qualified white person is completely and utterly bunk.
The assumption that any black person that got hired over a white is automatically under qualified is implicitly racist and (unless you have objective and empirical evidence stating the fact) highly illogical for a race of people that claim to have the market cornered on reason.
I don't believe in "reverse racism" in a country where the top 10% of the wealthy are white people who've inherited shit from some slave-owner great-great uncle. Or where the vast majority of the people are white.
I don't know how many people are running into under qualified blacks replacing whites. But I can assure you that there have been at least 3 times where an undereducated white person was either hired over me or placed over my head even though he knows fuck all about anything.