> Most Americans don't support Trump.

I didn't say "most americans", did I?

> And he's rapidly losing support within his own base

Weeks (and 3 nazi salutes) after he started, polls were showing that he would probably still be elected: https://news.ycombinator.com/item?id=43206757.

I don't feel like I'm spreading propaganda by saying that the US don't seem very close to a civil war. A majority of the voters elected this government and apparently won't change their mind unless they are impacted personally.

> And he's rapidly losing support within his own base

That depends a lot on what you mean by "rapidly". Relative to how quickly he has destroyed the image of the US abroad, and to the damage he is making inside the country, I wouldn't say that some people from his own base finding that he is going slightly too far counts as "rapidly losing support within his own base".

> It's difficult to imagine what might cause his supporters to change their options of him.

It would be helpful if people had more alternatives to vote for, not just one other party that stands for the opposite.

One possibility is that at least some of his "supporters" do not as much as want trump specifically but instead simply vehemently do not want what the Democrats have been doing and are willing to risk some chaos to avoid that. If that's the case (and I think it is) then the best thing that trumps opponents can do is provide real alternatives for people. Or in other words: stop attacking a large part of the population (straight white males) at every opportunity, stop trying to force radical social change, stop trying to cancel everyone with an even slightly differing opinion.