I'm sure this isn't news to you, but posting anything in the "politics" stream that isn't a carbon-copy of the farthest-right fake news/propaganda is an invitation to have your comments swarmed with right-wing chatbots.
I still post stuff to politics anyway, and I think we all should, just to remind these people that people really do think differently. Our memes won't hit front page but when you search by "new," the stream indicates a lot more viewpoint-diversity.
Remember you always have the option to turn comments off -- or indeed block certain memers.