The 'new white flight' is based in the same fear. These are people in fear of losing dominance in the community in which they live.
I think it was K41 who coined the defintion of 'white' as the default definition of American.
What happens when that 'community' perceives itself as threatened?
We already know the answer: Jim Crow.
Can they really get the top back on the boiling pot?
Well...it's all about power.