What newspapers print may be imperfect, but they at least struggle to be accurate. They have legal and professional disciplines to help them. The same goes for broadcasting, photography, biography and historical scholarship - as David Irving recently found to his cost. There are procedures against falsity. Film is an art form so powerful and arrogant as to claim exemption from such discipline.
Most films are fiction, which is no problem.
Any old distortion will do to sell a picture. The reputations of public figures may have their recourse. History can doubtless look after itself. I am against public censorship. I am even against censoring lies.