What is the real meaning behind the movie Film Noir (Double Indemnity and Brick) and what is the director of the film trying to share with the audience?

What is the real meaning behind the movie and what is the director of the film trying to share with the audience? You may write your paper through the view of politics, education, religion, values, economy, etc. – Include reference page, a cover page, and an outline. – Talk about film noir just a little pit not a lot.