I mean the message in The Dark Knight is really messy. The characters believe it’s immoral, but they use it anyway, and it saves lives and stops the Joker.

Yeah, as I say in a sibling comment, it's a fair reading of the movie that it's ultimately pro-surveillance because it shows that despite being immoral, unethical mass surveillance catches the bad guy. But "surveillance is unethical but necessary when battling the forces of evil" is worlds away from "surveillance is totally awesome and everyone should buy a Ring camera."