In the beggining there was a dope ass bear
The sub started as an unofficial sub for the pod. Over time it became a focal point for the " dirtbag left", unapologetically hostile and uncivil leftists who wnated to name names and apply blame where it belonged instead of playing the normal civility politics game. It was initially boosted by hope for the bernie campaign and then became a kind of maladaptive group therapy thing.
The sub culture was "all posting is good posting" and we posted a lot. We were the second or third most active sub by post velocity, in roughly the same bracket as the nba sub with millions of members. That made the sub extremely visible beyond it's membership numbers. We also gained a notorious reputation for being bernie bros when the dems were going hard on discrediting bernie's street level movement.
And when people would come on to the sub to complain at us we'd bully them ruthlessly.
All of this was embarassing to reddit. One of the far and away most active subs were a bunch of cruel leftist assholes who loudly supported bernie and were mean to everyone. Spez is a nazi, reddit is a psyop, and libs and fash alike are delicate in the face of critique, so we became the specter haunting reddit.
Seriously people were so fucking mad the subexisted. We were constantly accused of brigading although i don't think we did much. The usual tactic was to @ shitheads to lure them in to the cth sub and then crucify them.
Evetually the admins quarantined the sub on some bullshit excuse, along with most of the other left subs. But that wasn't enough to stop the red and black menace, so when /r/thedonald finally did enough terrorism to force reddit's hand they banned all the left subs at the same time on bs pretenses.
That's what eventually spurred the creation of this site.