Signal received!
Just a reminder to you that we're supposed to be a color-blind society. What you've written here is quite wicked and racist because most Americans are ignorant about their history.
That cluelessness presents us with an fantastic opportunity! If you observe the average American numbskull, you'll see he'll treat his peers objectively in the here-and-now rather than through historic racial filters. Given people are now like blank slates, it's cruel of you to pigeon-hole everyone into racial and ethnic buckets the way you've done.
By repeating these confusing things to our lovable idiots, "there's race, historic oppression", you continue to divide people.
Black culture is a real thing: it is the culture created by kidnapping millions of Africans, stripping them of their names and heritages, and leaving them to their own devices in a new country. (This sounds activist-y, but it's not; it's a simple statement of fact).
"White culture", on the other hand, is not really a thing. Irish people don't share the same songs, eat the same food, tell the same stories or wear the same clothes as southern Italians. And, in fact, at points not too far back in history, neither the Irish or the Italians were considered "white"!
Compare "pro-black" with "pro-Irish" or "pro-German". You'll find that people are out and proud about their Polish or Lithuanian heritage.
The problem with being "pro-white" is that, when you dig into the history of the concept, it's really just a way of being anti-black (or, if you want to generalize, of being "anti the outgroup of races and cultures not currently accepted into the coalition of races and cultures we currently deem "white").