My practical answer would be, of course, right wing shit, period. It wouldn't stop them but might slow their spread.
My fun/funny/unserious answer would be commission an algorithm to monitor Reddit so I don't have to that keeps track of exceedingly popular passive-aggressive and smug ways to start and end sentences and takes the top percentiles of them and makes them the shockers of the week. It would make Lemmyverse liberals a lot less redundant as a side effect, too. 
"Umm, I'm sorry, honestly, but let's be honest here. It's almost as if..."
"Wow, vitriol much?"
I've only heard that one a few times but those few times deserved many shocks.
Fuck "netiquette" and especially "Reddiquette" too.
