lisegagne/E+/Getty ImagesIt happens every year but it never gets less jarring. That one drunk uncle brings up politics (and never in a thoughtful way). Your mother-in-law asks about that one sensitive subject that’s really none of her business. Your grandma comments on how much food is on your teen daughter’s plate. Whatever the topic, family gatherings have a way of bringing a bunch of people with differing opinions around one table, where they’re just comfortable enough with everyone to spew their hot takes and outdated perspectives. If you have someone like this in your family, here are som...