Thoughts on white people having to pay slavery reparations?

I'm white and as far back as anyone can remember my ancestors were white but apparently there's Sub Saharan DNA on one side of the family (and north African on the other). There's a good probability my GG grandfather on my father's side was a good bit darker complected than I am and I'm reasonably sure that side of the family never owned slaves. So how would this work? Would someone have to prove they are descendants of slaves to collect or is simply being black proof enough? How about whites whose ancestors arrived after the civil war? How about people who identify as white but who have ancestors who were slaves and people who identify as black but who are descendants of slave owners?