On the one hand, harvard and the left repeatedly say we should live in a colorblind society. Race is not important and it isn't even real. It is a social construct of no importance to who the person is. They tell us only raicsts are obsessed with race and only racists see color.That's a MASSIVE straw man. Harvard won't argue that, and nobody who studies race and equality issues will argue that.
I'm assuming that you are looking for actual discourse on the topic. The issue of color-blindness vs. race consciousness is pretty well-trodden territory in the context of studying racism. If you google those words, you'll find plenty of literature about it. I just tried it and there are several good discussions of the topic in the first couple pages.
The short version is that colorblindness doesn't address the "rich get richer" effect, so if you want to close the gap, you're going to have to look at ways to create catch-up mechanisms.
If we are all humans and equal, why does race matter? Who cares if the humans attending harvard are all white or all asian or all black? We are humans right?
You're assuming that the default behavior is fair. That's fundamentally not true. If you're looking for the actual argument made by Harvard and "the left," then this is it: the default is unfair, and the goal is to make it fair.