Using a wedge issue as a universal bludgeon to attack anyone that disagrees with them.
Not sure what technique that's called. Concern troll, possibly?
Also, vote manipulation. Basically they spin up a bunch of alts across different instances and boost/demote posts and comments in an attempt to steer discourse toward their agenda.
Concern troll is, as I understand it, more directly faking concern for a person. Things like "Are you okay? Do you need to talk to someone?"because you rebutted their argument, or "Suicide/self harm are never the answer" because you posted an opinion they disagree with. Sometimes it even rises to the point of reporting comments as self harm in a way that gets an automated or admin response.