I think the issue isn't that people can't tolerate each other, and most people I think don't have as extreme views on the issues as we hear about.
The issue is that the vocal minority seized their chance and have the opportunity to actually make the things they want come to be.

But don't I have to be a republican to like guns, hunting, and outdoorsy stuff?

In any war the only winner is the rich. If the rich lose, then it's called a revolution instead.