Back in 2016, I had someone on my feed with lots of #MAGAIdiots friends, I'd start seeing their idiocy. All I had to do was post "What does Putin's Dick taste like?" to these people and their response would dictate if I blocked them.
Eventually, I gave up trying to weed them out, so I unfriended that one guy I've known for years who associates with them because he moved to their area. Oh well.