Single-family zoning is explicit segregation, yet it's popular across America. You can only build the most expensive kind of home in those neighborhoods. A majority of white families live in that type of home. A minority of black families do. Surprise! Segregated neighborhoods!
We culturally define "good schools" not as schools that increase a child's chances of success relative to other schools, but as schools that rich white people attend. We buy homes in segregated neighborhoods so we can send our kids to segregated schools, and we fight against cheaper housing options like apartments because they will make our schools less segregated and reduce our property values as a result. Surprise! Segregation!
Wealthy selfish people use our governments as weapons against black families, yet it's their fault that there's an unintegrated subculture. God bless America, a nation that will never allow black families to thrive.