I don't agree with a lot of the things Charlie Kirk said, and as someone who is not an American, there was also a lot of things he said I simply didn't care about because they didn't apply to me. I also found that his way of communicating was more geared towards encouraging discussions that would generate views. But despite all that, I can appreciate that he was a man who was willing to have a (mostly) civil conversation with all sides, something I wish more people would try to do.
American politics isn't politics, it's one step short of being like football hooliganism for supposedly smart people.
And the news networks eat that shit up. They love a boogeyman, because it's good for ratings.
You're right, though. Americans actually agree on most things [1]. In that sense, there is really only one "side." Yet the media exploits the small differences that people don't agree upon to create a giant divide.
Anecdote: I firmly believe Trump is going to destroy our democracy, or at least put it to its absolute limits. Yet, I have many friends who voted for Trump. They're great people. We don't ever talk politics, but whenever we talk about economics, or society, we actually agree about most things. If we didn't, we probably wouldn't be friends.
Yet the talking heads on TV would have us believe that democrats and republicans are enemies. And that may very well be a self fulfilling prophecy.
[1] https://apnews.com/article/ap-poll-democracy-rights-freedoms...