Sin City Opening Scene

From the opening scene you can tell that the film is set in an older time period from the black and white mode with highlighted red effect, and that much of the setting looks unrealistic on purpose to make the film seem like a comic. We see a gun on the guy so that we associate him as a hitman. This opening scene doesn't give much detail about what the film is about from just the filming. However there is dialogue and narration that hint what the movie might be about and what genre it fits into.