I once got banned from a subreddit (a subreddit that I had never been aware of as being in existence) for merely commenting on a picture of an Iron Lung, saying

I once got banned from a subreddit (a subreddit that I had never been aware of as being in existence) for merely commenting on a picture of an Iron Lung, saying that I hadn't seen one of those for about 60 years. Know why I was banned? Apparently the picture on the Front Page of Reddit, where I had seen it, was the thumbnail of an article in one of the pro-Trump subreddits. That over-enthusiastic censorship was one reason that I decided to withdraw from Reddit.