Here is an interesting personal account of a someone who was a Social Justice Warrior but then escaped (while still remaining a leftist social democrat). Sample:

This particular brand of politics begins with good intentions and noble causes, but metastasizes into a nightmare. In general, the activists involved are the nicest, most conscientious people you could hope to know. But at some point, they took a wrong turn, and their devotion to social justice led them down a dark path. Having been on both sides of the glass, I think I can bring some painful but necessary truth to light. ...

There is something dark and vaguely cultish about this particular brand of politics. I’ve thought a lot about what exactly that is. I’ve pinned down four core features that make it so disturbing: dogmatism, groupthink, a crusader mentality, and anti-intellectualism. I’ll go into detail about each one of these. The following is as much a confession as it is an admonishment. I will not mention a single sin that I have not been fully and damnably guilty of in my time.

P.S. For some comic relief look at the top left corner of the linked webpage. There is what looks to be the paper's byline -- "ABSOLUTELY NOTHING WRONG SINCE 1911" -- and right underneath it there is a more recent notice: "THE MCGILL DAILY IS LOCATED ON UNCEDED KANIEN’KEHÁ:KA TERRITORY".