idk, i wouldn't be friends with people who are powertripping retards in the first place. i guess you can't always tell if they've never been in that sort of position before, though.
but it's literally so simple. if someone starts flooding the channel with nonsense about niggers/trannies/nazis/poltards/other bogeyman groups then you tell them to shut the fuck up and take it to PMs because nothing they're talking about has anything to do with technology (note that i said flooding the channel about it, since i can't imagine anyone on 4chan would take issue with someone saying the nigger word). if they refuse to shut the fuck up then just ban them. not worth arguing with them over it. personally, i'm a softie, so i would let them back in later if they were to PM me and ask (and assure me that they wouldn't freak out about unrelated nonsense in the channel), but that's just me. permabans are fine, too. if people don't like it, well, no one's forcing them to use the channel. i don't think that's powertripping but maybe others will disagree