Honestly just talking about it honestly and in a non combative way can be a great thing. I don't find it's worth it to do this with acquaintances or strangers, but just sharing trustworthy news and sources with people you know. My friends and I share whenever we find good, independent reporters.

Approaching the subject gently with people who are very against it can also help. My partner's parents are big Trash supporters (even though we are Canadian) so he opened the conversation with his mom softly by saying things like "well, some of the things he said he'd do are good, but look at all these other things hes actually doing". I think his stepdad left the room at that point so some people just won't be receptive, but if you think it's worth it, just try.

But number one, just take care of your own wellbeing. It's not worth it to argue a lot of the time, especially not with strangers, and you'll just burn yourself out which is exactly what they want. Use your energy on things you feel will actually make a difference instead.