Well, it's an interesting read, though there is one aspect I question about their definition:

> People generally eschew violent vengeance in favor of relying on some authority figure or other third party.

My experience with people involved in this is that vigilante behaviour seems to be growing in popularity with this crowd. For example, note how many times you'll hear about people upsetting someone on Twitter, and then see them lose their job after thousands complain to the company about it or track down their home address/personal details or what not. Trying to have some blacklisted from the internet or their industry for some perceived slight definitely seems like taking the law into their own hands, even if its perhaps a bit less violent simply by virtue of being online.

I'd also certainly consider behaviour at protests from some of these people as violent, with actions by groups like antifa at protests against right wing figures speaking in colleges being violence inspired by victimhood culture.

Still, the rest of the article makes sense, and jives pretty well with reality.