So I have this grandpa, I'll call him Charles. Grandpa Charles is... extremely conservative and reactionary, and tends to view things with anger, fear, or hatred.
But that's not the issue. His wife - I'll call her Katrina - may have similar political leanings, but I don't know about them. She doesn't discuss them with her family. She knows that my nuclear family is strongly liberal, and most of the time manages to ignore it so that she can spend time with us. When I'm talking with her and it starts to get a little political, I feel this unspoken agreement to move to a different topic or find something we can agree about.
But Grandpa Charles is the polar opposite. When anything is discussed that could be vaguely related to something political - hell, if there's less than ten degrees of separation between a political topic - he drives the conversation there and then rants and rants and rants a very angry rant. Last time I argued with him, he was angrily ranting about "those damn demonstrating gays rubbing poop all over doors". Yeah. And I tried to convince him that there was little to no correlation between "being sexually attracted to the same gender as oneself" and "having a tendency to rub one's feces on door handles," but he wouldn't listen. He saw one of those people do it, he says. I haven't see it happen, he says. I don't get to say that the majority of homosexual people don't rub feces on door handles, he says. Was I there? I now know not to confront him when he's angrily ranting, but it makes it really hard to talk about anything with him. For instance:
Last month I competed in the Science Olympiad Nationals for Wisconsin. Grandpa Charles was interested in that, and asked questions. At some point in the discussion, I mentioned the many speakers who presented things before the award ceremony. Presented topics were: X, Y, this kid having designed a tidal generator for her friend in Africa, Z, W... And he took that "tidal generator" and ran with it. It's renewable energy, and he managed to turn the conversation to how the whole climate change thing was a hoax, just bribed scientists and such, and how we won't run out of coal and oil for millennia. Millennia, my foot. I could see civilization collapse from lack of energy if we don't have backup power sources. But despite my urge to rant back at him, I stopped. But the problem is that I literally cannot remember a day I've talked with him and he hasn't started talking politics. It's impossible to talk with him.
I've talked with my mother (he's my maternal grandfather, btw) about this, and I might have a plan: ask him to stop. Lay out how his tendencies are detrimental to our relationship. Suggest that politics are too charged for a discussion with a politically-opposite family member. But my mother said that just flat-out saying "your words are detrimental to our relationship" would be like a knife to his heart. In addition, she says he is likely to stop listening after the first few seconds of me confronting his rants, and that he could view this as an offensive accusation.
So how should I go about trying to fix this? Does it need fixing (I really feel like it does)? Would trying to fix it do more harm than good?