"No Politics" rule, opinions please

My boyfriend(M29) has a strict No talking about Politics rule with partners, however, I (F28) have been very stressed due to the sudden change in laws and how the affects my family and my nesting partner/wife (F30) who is trans.

This has meant for the last two weeks that every time my BF is asking why I'm crying it means he's asking about Politics then quickly changing the subject. He has also now been upset for 3 days that I'm not talking to him as much. But again things on my mind all go back to my "agenda" as he calls it so I don't have much to talk about with him. And we can't talk about religion lately either because that also ties into my beliefs. (Pagan beliefs for clarification)

I'm starting to think it's a dumb rule, but any advise on how to broach this conversation would be appreciated.

Update: Thank you, everyone who commented. I had suspected that my gut feeling was correct, but I wanted to make sure I wasn't freaking out, as my meta (now ex meta) had been telling both NP and I that we needed to calm down as we may become a danger to our children. This has been building and has only been a real discussion since inauguration. Had the conversation with now ex BF and he did indeed get upset about say I was trying to make it all his fault. This is also far from the only relevant disagreement. As there was was several instances where I had to put a limit on time together to be able to take care of family and children, that he had made pretty clear he was uncomfortable around. But he would never admit. In the end, he refused to understand that part of keeping my children safe also meant keeping NP safe. We decided to table the conversation for the night, then shortly after I received a long message from meta that said we were too far leftist and she could no longer associate with us as she had read the conversation with BF. I then reached back out to BF and made it clear that we were obviously not on the same path and could not make it work.

NP and I are shocked by where that conversation led. I have revised my requirements in a partner and made clearer some boundaries.