I'm not defending it, just recognizing discrimination is not an end for them but a means to what they consider a just society.
Suppose administrating Harward requires high economics and management skills. Only say 10% if total population has those skills and 1% is black... How do you know if the input is biased? Easy, check it. Then fix the problem at the source if possible.
Edit: I'm not pretending to be obtuse here - I'm actually questioning why an elite university should be representative of US demographics rather than the world.
Harvard has roughly 20% international students, whereas the US as a whole has about 0.6% lawful non immigrants[1].
[1]https://www.dhs.gov/sites/default/files/publications/Nonimmi...
The percentage also rises with higher degrees - people often finish their undergrad in their home country, then go to the US for their graduate degree. But undergrads are the bulk of college student bodies.
So overall, most college students in the US are from the US.
I don't know how anyone can come up with a racial quota and call it fair.