There is also the matter that the American political leadership managed to maintain some level of economic prosperity for the white working class in the intervening decades. Now that is collapsing, and the old narratives have returned.

The white working class and professional managerial class are in fact largely aligned in their zero sum assessments of the current situation. They differ principally on the nature of the solutions. No one on the left has the courage to acknowledge this, much less attack it.