Hollywood's approach is not at all PC for the simple reason that almost all of these superhero films have, you know, white leading men. In a lot of Hollywood produced genre fiction, your lead is a white male, and your supporting characters make the necessary nods towards the existence of nonwhite people.
This isn't that obvious a problem with superhero films where most of these leading characters are white anyway, but - if one takes Sci-Fi's Earthsea, or the recent The Last Airbender, where in both cases white protagonists take center stage in contrast to the source material, and both also have nonwhite secondary characters - it becomes a little clearer.
Now as far as Thor goes maybe if Hollywood was run by some kind of PC cabal, perhaps an actor best known for his stellar and highly lauded work in a critically beloved HBO series wouldn't have been playing second fiddle to some heartthrob from an Australian soap (but then, this is also a bit of a genre film tradition - solid character actors in supporting roles to buttress your young attractive face leading the movie).
This isn't that obvious a problem with superhero films where most of these leading characters are white anyway, but - if one takes Sci-Fi's Earthsea, or the recent The Last Airbender, where in both cases white protagonists take center stage in contrast to the source material, and both also have nonwhite secondary characters - it becomes a little clearer.
Now as far as Thor goes maybe if Hollywood was run by some kind of PC cabal, perhaps an actor best known for his stellar and highly lauded work in a critically beloved HBO series wouldn't have been playing second fiddle to some heartthrob from an Australian soap (but then, this is also a bit of a genre film tradition - solid character actors in supporting roles to buttress your young attractive face leading the movie).