"White" is a catch-all term for light-skinned ethnic groups with "defaultness" in American society. There is no such thing as "white history," "white heritage," or "white culture," except in opposition to "non-default" ethnic groups.
If you change the founding principle to "we want our community to be largely Russian," that would be totally fine by me.
Additionally, opposition to the "largely black" founding principle implies opposition to women-only spaces and other community groupings that are largely accepted in society.
What do generic "Europeans" have in common with each other? As a Russian, I feel like my culture overlaps relatively little with French, German, or English. Moreover, which parts of "Europe" are actually included in this taxonomy? Are Romani considered white? What about Southern Italians? Black people in France? It all boils down to "people of European heritage with white skin (whose ancestors wrote books and stuff that I like)," which is wishy-washy and tautological.
Not sure about whites and blacks in the US, but as far as genetics are concerned, (black) Africans have far more genetic diversity than (white) Europeans.
Africans enslaved in America effectively had their original cultures denied and destroyed. That's why it's appropriate to capitalize Black but not white when referring to American subcultures. (Whiteness isn't genetic. E.g. in South Africa under apartheid Chinese people were legally black but Japanese people were legally white.)
I agree it's a bit wishy-washy. But that's what it means. Everyone (in the U.S.) when they say whites, they pretty much always mean anyone with white skin who have European heritage.
Yup, so even if some poor Croatian guy just got off the boat, as long as he looked white enough for Americans, some of them would say he benefited from American slavery of blacks and must renounce his white privilege.
Regardless of your origin or connection to American history, I think it's healthy and socially responsible to face your "default privilege." The point isn't to feel guilty, but to become fully aware of the social structures underpinning your country, and to develop a sense of empathy for those who are forced to consider their skin color every day of the year when you can go weeks without even thinking about it. (And I say this as a first-generation immigrant.)
In any case, this has little to do with the original topic of establishing a black-focused community.
Spend his whole life being taught about white privilege and is never allowed to say that he understands so he has to get re-educated all the time. If he says he has already heard it before and understands then he is obviously a racist Nazi Trump supporter and must violently be re-educated about his white privilege.
If you change the founding principle to "we want our community to be largely Russian," that would be totally fine by me.
Additionally, opposition to the "largely black" founding principle implies opposition to women-only spaces and other community groupings that are largely accepted in society.