I don't think I'm making the case for what I'd call current white supremacy - the entire running around in robes and carefully guarding the resources so that nobody else can ever have some. I am however, making a more nuanced argument that things are never all bad or all good. World War One as an example was an instrumental change in the opportunities afforded to women in society and was an integral part of women's suffrage - albeit in a round about way. History has a tendency to level such things out when viewed longditudinally. I don't think I can defend wars or the nation state, but I can point to the fact that they're part of a continual journey and not an end point in and of themselves. There is much gnashing of teeth and wailing at where society is right now, with very little attention paid to where society has been. Anyone reading the current discourse would likely presume this is the worst time to ever be alive and I think that's disingenuous.
I don't think white supremacy is a social construct created by the disenfranchised, I think it has been an ideology that has existed and still exists in the minds of some people, perhaps even many people. But I also think societies have made some progress on undermining the structures which developed from it. There are things within our collective history which cannot have existed without some part of an ideology that Europeans and Western Democracies are superior to other ideologies. I think that throws up a more complicated picture than we're often prepared to look at when we're casting everyone and every event as either wholly good or ruinously bad.