If it sounds cartoonish, that’s because it is. The manifestation I’ve seen around me is that groups of 3–4 will pretend to befriend unsuspecting victims, inviting them to events and parties etc., then yell at/berate/abuse them at the first un-“woke” comment (no matter how innocuous), command that person to be better, and then completely cut contact. A person will think they have new friends, then a switch is flipped out of nowhere and those friends are gone.