There are big problems to start with when debating “white supremacy”. Mainly that neither word is very well defined! The definition of white as a racial construct shifts so much over time as to be practically meaningless without making an effort to define its scope. And I find it odd that so few people question what precisely “supremacy” is supposed to involve or mean. It is both subjective and absolute. “Pepsi is THE BEST!” Um, sure, OK. And naturally, if something had an objectively clear advantage, nobody would really need to argue or make agenda of it.
This graph adds the problem of “covert” to the mix. Covert supremacy in any case sounds like a contradiction in terms. As well as my axiom that anything which people take pains to keep secret is based upon bullshit, false posturing which they don’t want people to know is false until it is “too late”, when they finally consummate their natural predestined advantages.
The whole paradigm of “POC” I think is gravely mistaken. It functions as precisely the same kind of gloss as referring to “ethnic people”. Doing so is reactionary. It posits a norm first, which is not examined, and then creates a category of “other” which are supposedly distinct from it. So long as a group of people are viewed as The Other and not The Norm, they are going to have an uphill battle. Instead it is I think better (as in more accurate) to remind people that each of us has an ethnicity and, if necessary, a color.
Some scenarios such as “post-racialness” and “cultural appropriation” I think might be, for better or worse, inevitable. But they can be approached with drastically differing attitudes. What I think is the obstacle here which many are critical of is using these to dismiss problems rather than solve them. Categories change over time, and populations migrate, split, and merge resulting in identities which are always in flux. Neither race nor culture will ever be “nailed down”, so forcing them to appear distinct might be naive. But that is no excuse for a lack of communication or lack of willingness to address social problems.
As a bi-racial person myself, I often find myself in scenarios which edge upon post race (I am none of these categories) and appropriation (what culture is really ME, anyway?), and I think those trends will become only more pronounced over time.