Residential segregation is unfortunate but it pales in comparison to Jim Crow, who himself pales in comparison to apartheid.
Does it matter what historic atrocity it pales to when it's still terrible? It may not be as absolutely horrendous as it could be but it's still unacceptable.
It's still terrible, certainly, but it's at least sort of an inevitability, considering that different races or ethnicities or what-have-you have a tendency to self-segregate. It's a shame because it's a residual sort of cultural racism, but that sort of thing is very difficult to fight without inflaming it. Also, the real issue is poverty among the black community, which is more severe than among other groups in the US and which is what makes residential segregation horrendous -- without the poverty residential segregation would probably slowly dissipate (slowly, because people don't really like to move from where they live already).
