> it's not possible to end up 80% white guy without discriminating.

That is not remotely true. Individual choices, as well as experiences which shape the candidate pool, can cause such lopsided numbers. In my view, the single biggest problem with the (quite well intentioned) diversity initiatives is that they assume, without evidence, that any organization with lopsided demographics must therefore be discriminating. But that is a fallacy and undermines the entire endeavor they are engaged in.