Affirmative action is descrimination and is mostly used to give the advantage to blacks in this country. Never would have thought it, but the women's center at my college actually did a presentation on how white women are actually hurt my affirmative action because of the overwhelming advantage given to black women while white women are left largely to fend for themselves and therefore have all the supposed negatives affirmative action is supposed to correct but they don't receive the "necessary benefit."
Additionally, discrimination is discrimination, plain and simple. If it's such an evil thing, then it wouldn't be permissible in any situation, regardless of the ends. The fact that it's so "necessary" for blacks (please notice the fact people of Asian decent don't exactly get a lot of help from these programs, nor do Latinos, even the immigrant Latinos who are quite fully pulling themselves up by their bootstraps). It's a tool used by certain politicians to get a certain demographic to vote for them.
I'm all for equality, but equality means EQUAL not special rights, no one deserves something on the basis of their skin color, where they were born, etc. Granted, providing for the truly economicly disadvantaged is permissable in my eyes, but only if they first earn it based on the merit of their own work (i.e., provide need-based scholarships, but don't let people into a school just because they're poor). If there's an inequality in the school system or in society, fix that inequality. Don't use unmitigated inequality be a justification for any sort of discrimination.