I stay away from political / religious posts on Facebook. I'm not there for the backstage drama - it's just a means to stay connected to my family who are overseas.

Consider the option of "unfollowing" people if there are repeat offenders who upset you. It doesn't "unfriend" them, it's just that their posts don't show up in your feed; but you can still click on their profile to see what they've posted; when you're up to it.