Yes it is racist, because they suppress white people in the name of "diversity". They'll make exceptions: If you're a woman, or a gay white male. Not only that, but it's also sexist and heterophobic. If you are a straight white male, affirmative action will suppress you 90% of the time. So it's not inclusive, because you have to suppress one group to make other groups stronger. Not everyone benefits.
You gotta let the diversity happen naturally, without forcing this affirmative action system. I'm still for arbitrary discrimination protection. You gotta hire based on skill and ability, not race, gender, etc. If there just so happens to be a lot of white people in a board of directors, or employees, who cares.