I think what we need to do is enslave white people, let's say for purposes of their non-white owners' taxation and political representation that white persons count as 3/5ths of a person. Let's keep that institution alive for about 245 years, then whites can fight to end it, and then non-whites can  institute laws that segregate white people from the citizens--anybody who has at least one drop of brown or black "blood"--and whites can work for as little as possible for around another hundred years. Then the white people can undertake a civil rights movement so they can fight for "equal" treatment. 
If white people have the audacity to speak up about what happened to their parents, grandparent and ancestors, everyone scoffs and tells them to stop asking for special treatment because the only non-white people entitled to special treatment in this alternate universe. White people live fearfully as law enforcement uses racial profiling and prison awaits a great many of them due to poverty.