Reddit purged a bunch of subforums the other day for violating their terms of service. The biggest one was "The_Donald" which was a Donald Trump fan club.
Some right wingers got upset thinking they were being purged for being right wingers but they also got rid of Chap Trap House which was very Left leaning.
The Donald, Chapo, and Opie and Anthoy were all known for brigading other subforums.
In short reddit banned a bunch of subforums for bad behavior and Trump fans think it's because they're "conservative"