There's no real answer other than just living life. You date and marry black women, but there's no guarantee your children won't marry white people and propagate a white lineage. Just do whatever you want.The black man has the most policed dikk on the planet. A black man dates/marries a light skin woman, he hates dark skin women. He dates/marries a dark skin woman, he's overcompensating(I've been told this twice). He doesn't want to mess with fat black women, he's fat phobic.
Asian men prefer and almost exclusively date Asian women, even if their women seemingly prefer white men. There aren't nearly enough Asian men dating out for their community lambast men who date out.
Latinos don't tend to have a problem with dating out with white people, the problem comes with dating anyone else and especially black people.
White people don't really care like that because the upper market value white men prefer dating and marrying white women and that won't change, while the lesser white men can go and bag a top tier Asian women or Latina.
So I would say our situation is unique considering the historical context.