Don't be so sure about that. Liberals, especially liberal whites, are lunatics. We had a gang shootout with three dead in my town and the white libs were saying that our town was still safe since the shootout was between gangs. They lack logic and reasoning skills, which is why they are liberals.
In my town the fading whites, especially the older ones, would be talking about such a shooting for years, and vote very differently because of it. Some of them are liberals, but the suburbs of Newark NJ are filled with older white people that were chased out of there decades ago.