Its a curious phenomenon. At what point will those pushing identity politics realize that they are encouraging these neo-nazis? How far will this spiral go before the blinders come off?
First we had massive pushes for minority identity politics and differing treatment based on race, then we saw it take over schools ("you're a white male!"), then we saw people like Richard Spencer get propped up as identity politics in the other direction strengthening calls for white nationalism and arguing that white people and minorities can't and shouldn't try to live together, then we had him punched and people equating him to a nazi and saying its ok to punch nazis (encouraging violence:
https://www.nytimes.com/2017/01/21/us/politics/richard-spencer-punched-attack.html), now we have more actual nazis calling for the blood of minorities hyperbolically. This is spiraling more and more out of control, and neither side of it sees themselves as instigators or sees their similarity to the other side.