I've read about it a time or two in the past few years. Some of the Charlottesville reporting found "manosphere" rodents in the fascist mix. Think the first time I totally knew it's a thing was this in 2014: https://en.wikipedia.org/wiki/2014_Isla_Vista_killings …
Most of we wimmins have had problems w/ a guy(s) who won't take "let's just be friends" for an answer. This congregating and nurturing resentment at us to the point of hatred is freakin' dangerous.