Might want to look into why white flight even happened in the first place. It wasn't because apartments were built.
It was directly tied to the disruption of neighborhoods culture. That's the root of my supposition.
It was because the new people were not white. They were black. The culture was not a factor, no matter how respectability politcs exactly as white they acted, they were black and thus a threat.
That's what 'FuriouslyAdrift' is saying. Those are the people he/she does not want in the neighborhood.
There are plenty of blacks (and latino, indian, phillipino) in my neigborhood as it's a firmly middle class neighborhood. What we don't want is CRIME and transient residents that don't care about the area along with the landlords that are out of state.