Thinking about the scene where Paul enlists the Southern Fremen in Dune part 2. I really love this scene, and, let's not kid ourselves, there's an element of power fantasy to it.
But there's something much sinister going on there. Paul specifically screams "I am Paul Muad'Dib Atreides, Duke of Arrakis". The mere fact of calling the planet Arrakis instead of its original Fremen name Dune, and the fact that he claims to be the legitimate Duke of the planet because he's the heir of House Atreides is an insult to Fremen independence. What he was allegedly fighting for this all time...
There's a consistent theme in this scene of Paul refusing to follow Fremen customs, like when he refuses to kill Stilgar and speaks anyway. Paul is doing that on purpose. He asserts his dominance by showing Fremen rules don't apply to him. He can dismiss anything he dislikes about their culture and remake it according to his will.
This scene shows simultaneously the crowning of Paul as a Fremen Messiah and the death of traditional Fremen culture. Paul is pursuing by other means what the Harkonens started.
What Paul is asking of (or rather demanding of) the Fremen, is that they join him in a revolution. But not a revolution towards more freedom, justice and equity. A revolution meant to create a society based around the supreme power of a tyrannical leader. And that's a central component of fascism.
Which can make us question the ethics of Villeneuve's film. This scene shows the birth of a fascist movement in a very epic and heroic light. The intended message of the film is clearly anti-authoritarian, but cinematography leaves much room for misinterpretation.