This is such a quality question. But a lot of people are just naming their favorite movies in the comments.

What you want is Moore's Watchmen. It is a deconstruction and reconstruction of the Superhero as an American trope.

What I loved about HBO's continuation is that they focused on how white supremacy is intertwined with heroism, just as Moore wrote in his original IP.

Then you got the Zack Snyder movie which was mostly, "ooh, look at these people with powers fight crime". None of the impending doom of the fall of society from nuclear war and/or fascism, and how the heroes were pointless because they were the ones pushing forward this doom. "Who watches the Watchmen?" etc.

Cool supplementary article: https://nationalpost.com/entertainment/books/watchmen-creator-alan-moore-says-superhero-genre-remains-a-white-supremacist-dream-of-the-master-race