Apologies if there's already a thread on this, I checked but couldn't see one.
Incel - short for 'involuntarily celibate'.
www.google.com/amp/s/www.bbc.com/news/amp/blogs-trending-43881931
So a group of men angry at the world (read: women, as well as men who are able to get laid - yes, really) have formed this group, and they're getting radicalised.
Apparently this group has been around for about 20 years.
Yet again - Hell really hath no fury like a man scorned.