I think it can both be true that trump is a bad candidate in general and he is a individual and candidate who is particularly well-suited for activating the (overall easier) pathway republicans have to win under current US system

But racial and ethnic divides were largely inflamed by capital using migration as a reserve army of labour, not by cultural differences themselves.

Absolutely no doubt significant segments of US labour movement has been historically anti-immigrant - head of Knights of Labour became first commission general of immigration and was fiercely racist against Chinese.

No juicing this psychic

There's a wildness and a roughness due to sheer geographic scale and party weakness. That means pockets if authoritarianism which can metastasize but also that a 34 year old democratic socialist can become mayor of NYC.

They'll enter a death spiral of chasing the right on migration, hurting growth, and then having to implement unpopular cuts and tax rises which will further empower the far right.