First, I’d argue that every fascist movement is unique, since it’s heavily rooted in national myths. I’d also argue that Nazism is just German fascism, and Nazism as a coherent political force is dead. There are some hangers on, but it’s not gaining power. I’d argue that any fascist movement that crops up in America might have hints of Nazism, just like Nazism had hints of Italian Fascism, but it would be something else. That being said, while I agree that power collecting authoritarian instincts are an immutable part of human society, it’s not clear that Fascism is. Fascism isn’t that old; the fact that it cropped up so recently implies that it’s either driven by, or needs something else as a prerequisite. If that thing goes away, fascism might too. Similarly, other forms of authoritarian power accumulation have waned over time. Feudalism and monarchy (parliamentary & symbolic types excepted) used to be *the* form of government for thousands of years. The instinct to advocate for kings and queens appears to have largely been replaced by dictators and fascistic strong men. This implies that while authoritarianism isn’t going away, the form that it takes can change over time.