There's a chance they'll just remove your post if it goes against whatever bullshit they're pushing, not even politically speaking. If you go to a subreddit about a type of substance/stimulant that can help you alleviate stress or some other form of bullshit, there's a probability your post will randomly disappear and without a reason or response from the mods if they feel you aren't praising or promoting it. I was pretty surprised to realize this, as I was lead to believe that Reddit was typically only censor-crazy on personal beliefs and not things related to your actual health and wellbeing.
I had a negative experience with a particular type of drug, I wrote a review stating what I had prior to consumption, how I felt, etc. All of which adhered to the "guide" they had pinned to the top of the sub, I figured I wouldn't have smart arses and retards patronizing me about how I did something wrong, how I didn't do this, etc. There was no way any of these guys could pull some dumb shit out of their ass about how I didn't do something correctly, which they would probably use as the reason why their shitty little drug didn't work for a person.
Turns out that despite my honest review about the product as well as the company, which in no way was I compensated or paid by in order to write this review, they straight up just deleted my post without any reason whatsoever. Having others best interests in mind isn't something these dickheads are concerned about, all they care about is promotion of whichever thing the subreddit is focused on. I see a lot of people speak about Reddit being a good source of information in relation to very niche and particular topics, since the userbase is so big. Though I suggest to still keep an eye-out when reading these things because even those subreddits will probably have a narrative and be controlled by a group of ass-hats who are incentivized to push the subreddit's topic that they're so obsessed over. Most of the people that create these subreddits do so out of infatuation and love for the topic, they most likely have great experiences with said thing. So when someone has a negative experience in relation to it, their tiny brains can't fathom that this was the case and thus will remove your post. It's a pretty important detail when it comes to shit that can mentally change the way you behave.
Reddit can be a good source of information but can also be dangerous. The mods of these subreddits censor much more than just politics. Everything is heavily one-sided on that site. Everything.