There’s always been something insidious about the MPAA ratings system. It’s allowed filmmakers to more directly label films as if they were products off the supermarket shelf -- “The Dark Knight Rises” is going to be PG-13, because it’s about a character kids wear on their jammies. “American Pie” is going to be R-rated, because they’re going to talk about sex a whole lot. But sometimes, you wonder if the PG-13 and lower ratings are designed to rescue filmmakers from themselves, forcing them to find creative ways to tell certain stories without the benefits of explicit content. Unfortunately, that train of thought is absent from “The Campaign,” a proudly-vulgar idiot festival that wears it’s sophomoric R-rating on its sleeve, infusing a ripe satirical comedic idea with nonsensical foul content in lieu of character, story and comedic resonance.