I am using Führer as the word 'leader'. With all its negative connotations. I know exactly when Hitler came to power. And technically he came to power while the Weimar Republic still lived in early 1933. Sadly for the Weimar Republic. Le sigh.
The point is that Trump is a personality cult and the United States is in a Weimar period where left and right are battling it out for control over the state.
We can also discuss Führerprinzip. Or other personality cults throughout history. But the parallels to Weimar and the American Republic in 2022 are better than other parallels.