[QUOTE=theveed]Why do you even need to put a disclaimer, are people THAT DUMB? Do you need to put that People Can't Fly after showing Superman?
Clarification: Fiction disclaimer is something you see in the end saying that the persons and scenes shown does not in any way depict the real persons and scenes living or dead.
Put your self in the shoes of the Opus Dei or the Catholic Leadership in Rome...those depicted or implied here in this movie to have been capable of commiting murder just to "protect the secret of the grail". The least that the movie owner could do is to put a fiction disclaimer to protect the decency and moreso the sanctity of the people or organizations mentioned. To some extent, what they did was even blasphemous.