I've been married for 18 years, two primary-aged DC. My ILs are American. They live about 20 mins drive from us (in the UK). For most of my marriage we've gotten along fine-ish, although I've often felt like they cross a lot of boundaries and have learned to be judicious about how much I open up to them. But they're hospitable and generous - have helped us financially when buying our house, help with the DC in the holidays etc.
They've occasionally made comments that have rubbed me the wrong way, but I've dismissed them as typical boomer nonsense - e.g. the idea that poor people are usually poor because they've make bad choices. They also cautioned their other son (DH's brother), who was planning to (and did) marry a Black woman, that any time a "minority" has married into the family it's ended up causing problems and division. But by and large I keep my conversations with them superficial and manage to rub along ok. The DC adore them.
But - I recently found out that FIL voted for Trump. Any time a controversial issue has come up regarding politics in the US, the conversation gets shut down very quickly, but I had my suspicions and these are now confirmed. And maybe it's ridiculous but I just can't stomach being around them anymore - I'm disgusted that he felt a man like that deserved to be elevated to the role of president and I'm furious about the havoc that is unleashing in the States and elsewhere. I don't want my daughter (in particular, but also not my son) spending time with them, I just feel like they're completely different people from me, with completely different values.
They are oblivious to how I feel and would feel blindsided if I brought it up. We would definitely not be able to have a productive conversation about it. So AIBU to just quietly stop accepting invitations, offers of help etc and gradually distance my family from theirs, or is that a massive overreaction?