This article is long, heavily documented, and IMO very very important.
http://www.vox.com/2016/9/19/12933072/f ... ump-brexit
A brief summary...
While "common knowledge" is that far-right extremism is fueled by economic hardship, with citizens fixing on isolationism as a solution, most research in the field completely fails to support that. There is no significant positive correlation between white working-class economic loss and support for far-right parties. In fact, there is negative correlation in some cases, with business owners and those with long-term jobs more likely to support racist nationalism.
In other words, those things that suburban liberals say about "poor white trash" are privileged bullshit. And so are the things conservatives say about the only real lefties being bourgeois. This is a phenomenon overwhelmingly tied to racism and religious bias, far more than to the economy.
The coming century is going to be a long, long uphill fight.