“Every day, I come by your house and I pick you up.

[Eric Cartman]

So CIVIL WAR as an examination of that division, of our inherent differences, is a film I want to see. I am uninterested if it's Trump, or the Clinton witch-hunt that debased the Executive Branch, or Tricky Dick Nixon's fall from grace AND escape from consequences that caused it. It's unimportant. 

What's central is that we've always been divided.

Yes, that's pretty much the film he made.
Much of the criticism he received for it was that he didn't say "THIS IS THOSE GUYS FAULT, LOOK WHAT THOSE GUYS DO!" because it was about extreme partisanship being Bad, Actually, which some people were seemingly offended to hear.

There's plenty of historical precedent for repressive totalitarian regimes under either side of the political spectrum, and that not being a good thing so for people to take umbrage at him for not saying 'this party good, this party bad' is to me baffling, and says vastly more about the mentality of the people making that complaint.

If it had been about 'Trump Bad', it would end up being horribly dated extremely quickly, and, again, it clearly wasn't intended as a polemic about any one political leaning or administration in particular, even though you could choose to infer your own 'sides' to what was going on, and most people probably do based on their own leanings.