Tribalism

Have you visited any niche subs as of late? You cannot say certain things or be part of some other subs cause you'll be banned, there are unwritten rules that will get you downvoted for saying the most common things like "I prefer juice over water" or "birds are real" lol.
-- reddit
----
I've been banned from subs I've never even been to because I commented on some other sub.
Not because I posted a specific opinion or anything, just because I commented somewhere at all.
--- reddit
Back when TD was still a thing and some big controversy was happening, I responded to a single comment (not agreeing with them). Immediately got banned from like 10 subreddits.
-- reddit.com
I got banned from a bunch for being unable to hold my tongue (thumbs?) on some idiotic post on NNN (the one that ends in normal, not November). I sent a mod mail and most of them got reversed. Then I commented in Late Stage Capitalism and immediately got banned from Landlord, which I thought was funny just because it seemed random.
-- haventwonyet, reddit.com