I'll go in a gigantic tangent right now, but I need to do it: When did an american action movie is about proving the opposer wrong? For decades, all they do is further demonize whoever opposes the "good guys"; I rewatched Rambo 3 and 4 recently, and, while both are pro intervention flicks, at least in Rambo 3 the bad guys have a name, at least we know they're human, and we know their reasons to do what they do, but in Rambo 4 the bad guys don't even have names, they're just a bunch of Burman military killing farmers for fun, so that we'd cheer in excitement as Rambo multilates them with a .50 at the end; Rambo 4 is the epitome of american war propaganda in movies, while Avengers (and other Disney movies recently, SW included) are a softcore, family-friendly version of that: you can kill the baddies as long as they're nameless beasts/footsoldiers, only this time it's aliens and clones instead of asians and slavs.
Well, that's the point of superheroes in the first place, power fantasies about punching endlessly anyone symbolizing stuff opposing the "american way" (or whatever the consumers oppose); communists, economic rivals, etc. We're just living in the time of social justice being profitable, so now instead of villains embodying communism or undesired nationalities, they embody anti-progressiveness.