@hache House Atreides manufacturing consent by leveraging Space White Supremacy that was exported by Space Missionaries
It’s very easy to leave details out and conclude Dune is “Harkonnen bad, so Atreides does the Good Colonialism and everyone is happy” but Herbert says in interviews that it’s meant to be heavily critical. This is supposedly clearer in book two (which I don’t remember at ALL) but so far it seems a lot more plausibly supported in the text of the first than I remembered