https://www.themarysue.com/hela-thor-ragnarok-imperialism/
https://www.villagevoice.com/2017/11/10/thor-ragnarok-marvel-from-a-postcolonial-perspective/
If you’re reading too much into it, you’re not the only one…
Anti-colonialism is a major theme of the film, whether we’re talking about Odin’s benevolent paternalism covering up a legacy of conquest, Hela’s manifest destiny ideology, Valkryie’s complicated relationship to her past, Asgard as a place vs. as a people, and of course the end result of Asgardians becoming refugees looking for a new home.