The thing that's wrong is the other component of multiculturalism: political correctness. Both are carefully constructed parts of cultural Marxism.
I've been saying for 20+ years that political correctness will destroy this country. It's a method of limiting free speech. It's carefully designed to stigmatize people who dare mention the pink elephant in the parlor. Joe McCarthy was an early victim of it. There have been many others.
Affirmative Action is meant to enforce opportunities, not the virtues associated with the proper exploitation of such opportunities.
Affirmative Action has become a legal clearinghouse for communists to take over the government, imo.