this piss of a discourse, of course; tactics
More seriously, as a vet of the LJ Psychic Wars, my sincere advice is if you see anything that resembles 4chan or Encyclopedia Dramatica, kill it with fire and plenty of it. It's the social equivalent of John Carpenter's Thing.
Flat-out ridicule works surprisingly well. So do efforts to turn them vs. each other. But the most effective solution, in my opinion, is surrealist-meme saturation bombing. Their babble is already empty; help the process along.
this piss of a discourse, of course; tactics
You would not believe, for example, the chaos and outrage I managed to create once in an anti-furry troll community simply by anonymously posting High Art nudes. They were CERTAIN it had to be some kind of attack (and it was), but they had no idea what it was supposed to mean. Reduced them to frothing witch-hunty madness for days, and hopefully distracted them from some other poor target.
High-larious!</monty_burns>
this piss of a discourse, of course; tactics
I'm a terrible person for saying it, but yeah. If you really truly don't want these people around, or want to strike back but don't want muck on your delicate fluffy paws... roll out the anonymous untraceable accounts and confuse the FUCK out of them with technically innocent but bewildering and vaguely sinister content.
this piss of a discourse, of course; tactics
But honestly, if you can build yourself a nice bunker and wait it out instead... that also works great. They're quite capable, in my experience, of turning on each other and destroying themselves, if all their usual targets are nowhere to be found.
Good luck, kids. Aunt Rezy will be here cradling her shotgun full of willfully miscaptioned Russian animation stills and 1950s advertising clip art photoshopped with queer iconography if you need her. O:)
this piss of a discourse, of course; tactics
But, I mean, if you can build a bot that just scavenges content from /r/creepy and posts a random image in a reply to anyone who even mentions, let alone links to, K***F**** or any of the major drama-stirrers...
...then I was never here, and we never met, and you've never heard of me. You've never heard of any tigers on Mars. You don't even know what a tiger *is*. O:)
The key is to leave them feeling like they left you: angry but w/o a clear target.