The Day of the Jackal (1973)

Other mistake: Interior Minister Roger Frey advises Commissioner Lebel that all members of the police, military and other security forces attending the ceremonies on the day the Jackal is expected to strike will be issued with lapel badges at the last moment, in case he is going to try to masquerade as one of them. We see hundreds of such people in the next part of the film, including Lebel himself and the CRS private who allows the heavily disguised Jackal through the barricades around the site of the ceremony DeGaulle is due to attend. Only the CRS private wears a lapel badge. Not one of the other police or military officers in attendance is wearing a lapel badge of any kind. (01:58:15)

The Interrogator: You're being very foolish, Victor. You know yourself, they always talk in the end. You've seen it with your own two eyes in... where was it, Indochina? And Algeria, of course. Why don't you tell us what they're waiting for in that hotel, eh? Rodin, Montclair, Casson: what are they planning, who have they been meeting? Nobody? Not a soul, hmm? Then where were they before they went to Rome, eh? Tell us, Victor.

Trivia: The Jackal demands $500,000 (US) to assassinate De Gaulle, which seems like a modest amount for such a dangerous job. However, when you take inflation into account that's the equivalent in 2024 money of over $5m. No wonder his putative employers are surprised.