Wait, huh???
r/startrek, without the underscore, is the official Star Trek community. r/star_trek is an alternative community created because r/startrek is very hostile to anyone who doesn't just slobber over anything Star Trek.
So people would join the alternative community and bring up why they got banned on the official one, or how people were being ridiculous in general on the official one.
But I don't buy that there was any meaningful amount of brigading that was happening. I think the official community, being its pious self, didn't like that people were exposing the mods for being arbitrary and condescending, or that anyone was exposing the likely possibility that they were highly controlled by ViacomCBS.
When it got locked, for all intents and purposes it was banned, if not temporarily.
/r/DarkNetMarkets. Just for discussing DNMs, AFAIK.
/r/shoplifting
/r/stealing
/r/beertrade: for trading beers
/r/gundeals for a bit. Several other gun buying subs are still banned.
/r/fakeid
/r/scotchswap: for trading Scotches
/r/cigarmarket
There's more, too.
The rest of those are just banning discussions of illegal activity. Seems like a reasonable policy to me.
And it's not like there aren't thousands of other subs that discuss illegal activity. They haven't banned all the drug subs, or the hacking subs, etc. Pretty much any illegal activity you can still find subs for it. /r/streetracing, /r/piracy, etc.
FTFY
https://www.reddit.com/r/ShitPoliticsSays/comments/9m30os/rc...
https://www.reddit.com/r/ShitPoliticsSays/comments/bmtdqb/ch...
https://www.reddit.com/r/ShitPoliticsSays/comments/c66x0w/1_...
And the_donald literally disallowed submissions for months before being banned. When reddit has a sub in their sights, they will find a reason.
/r/mgtow