Actually All Along the Watchtower comes at a critical point in the movie, and it is perfect.
The music integration is perfect in my opinion.
Actually the right wing Rorschach is the only character whose integrity is remaining at the end (in spite of his hang ups).
Moore did not intend it, but I see the alternate 1985 as what the U.S. would have been like if Reagan had not been elected. Boy he would have a cow if he heard me say it to him in public.
The source material is not perfect, but it is the first comic to really go after the violent underside of masked vigilantes.
I got to say that I loved the movie. Not as good as Dark Knight of Spider-Man II, but comparable to Batman Begins and Spider-Man I.
In the comic book, the bad guy is a leftist, while the heroes are mostly right right-leaning. I haven’t seen the movie yet, but I’m expecting Hollywood to turn this around and cast the bad guy as a right-winger or, at least censor the fact that he’s a leftist as it clearly states in the comic.
Frank Miller's The Dark Knight Returns came first.
And Denny O'Neil/Neal Adams sort of hit on that territory with some of their work in the early 1970s.