After watching Jan 6th, I don't think a civil war is on the horizon. Most people are too soft and comfortable. Hell, there was one lady that stormed the capitol, got maced, and then complained about it to a reporter. When she was asked why she stormed the capitol she said, "It's a revolution, man!"

Also, you can't really divide the country up geographically by left or right (more people in California voted for Trump than in almost every other state, for example). So, no, I'm not worried about a civil war.

That being said, I don't see the far-right disappearing anytime soon. There are powerful people that benefit too much by having our society divided, and it's not just in the US where this is happening.