There's a lot of subreddits that should be zero politics, where people are being banned because they're members of other subreddits, or they aren't even members, but posted in those other subreddits.

You can find about a post a week in /r/WatchRedditDie of someone who posted an anti-Trump response to another person in a Donald Trump-friendly subreddit and they end up banned from other subreddits like /r/OffMyChest... for the crime of disagreeing with a Trump supporter, in a Trump subreddit. The very act of even associating, even in an antagonistic way, with a Trump supporter is ban worthy?

Every moderator whose ever done that should be immediately stripped of all power and banned at the IP level.

If Reddit admins weren't absolute cowards now, they would do it, but the site is sufficiently corporatized now.