To find out, in 1999 we surveyed a random sample of more than 1,600 students and 2,400 faculty members and administrators at 140 American colleges and universities, asking them to evaluate the quality of education at their institution, the academic preparation and work habits of the student body, the state of race relations on campus and their own experiences of discrimination. Then we correlated their responses with the proportion of black students attending each institution, based on government statistics. And the problem is revealed -- "diversity" is a code word for "black".
My personal perspective from the military, university, and business is that diversity overall is a very good thing - as long as diversity is understood as having a mixture of ethnic groups, "races", religions, geographical origins, and gender. Having worked with teams composed of hispanics from the southwest, "mountain people" from the kentucky hills, mormons, pakis, Indians, cowboys (goat-ropers), etcetera -- I can tell you that a diverse team is a strong team. So I have no objections to true diversity -- it is a lot of fun.
Diversity is a consequence of freedom. It cannot be imposed by bureaucracy nor is it the result of social engineering. One gets diversity by requiring the same standards be met by everyone.