Its supposedly about a movie being produced by Terry Jones. As if they would know about a low budget movie being produced in Gainsville.
No one seems to agree on exactly which film it is, probably because no one's asked, instead the reporters are fed a line of bull from the state dept about some film, and the reporters embellished it by looking for a film in the works that would fit the story.
Simplest explanation, though, is that the protesters are just celebrating 9/11 and didn't just accidentally happen to time their protest for its anniversary.