Hang out with grandpa and just ignore the trump shit. If it’s just them liking trump and that then learn to let go and just be with people if you liked them before trump. Not your job to change people. But don’t burn bridges. Internet taught a generation there are these clear lines that we can’t ever cross. My dad is a die hard trump supporter. Love him to death. We have many heated arguments and he fully knows he won’t listen to facts. I also refuse to listen to sources like fox or New York Post or other bullshit. We have many impasses. But I love him and would never dream of thinking less of him or going no contact over something that use to be a thing we all kept to ourselves. Not worth it. Don’t let trump make you burn the people in your life that are family.
But I get if they’re violent or deep deep deep into it. But also we should all get better at looking past this stuff. Trump will be gone one day and the bridges we burnt over it will never be worth it.