I'll skip the rest of the post, but I've found myself thinking about this also.
For me, the context was a little different, and was more around the impact of anti-theism, and more specifically some 'atheist' subcultures, like New Atheism, and also more organised or coherent atheist groups, like the American Atheists.
It's an ongoing process for me (considering this) so I won't pretend I have any answers. But I do think that (for various reasons) the encouragement of resistance is not limited to the right wing responding to the left. It appears more universal.
Indeed, Trump's campaign messaging was heavily reactionary, as was the formation of the Tea Party, but there are mass appeal based left wing movements as well.
So whatever the reason for this, I get the impression that reactionary political movement, and partisan beliefs is more pronounced now across many dichotomous relationships. I think we see things increasingly as a choice between 2 extremes, and too commonly lack nuance. I think, further, that our ability to reduce complex issues to soundbytes we can easily consume, and our choice in content being more tightly reflective of our pre-existing beliefs is a fundamental consideration in all this.
At a personal level, I try to read multiple sources on issues, and try to include slightly left/right views (I'm not terribly interested in unnuanced jingoism, although it depends on the issue).
Anyway...my thoughts on your question, for what it's worth.