The MPAA has given a movie ("Facing the Giants") a "PG" rating because it is too religious.
The MPAA, noted [Kris Fuhr, vice president for marketing at Provident Films], tends to offer cryptic explanations for its ratings. In this case, she was told that it "decided that the movie was heavily laden with messages from one religion and that this might offend people from other religions." (Terry Mattingly On Religion)
Are anti-religious films rated similarly because they might offend believers?