Campillo is among over 2,000 industry professionals signing an open letter.
The letter addresses concerns about censorship in French cinema.
The discussion comes one year ahead of the 2027 French presidential elections.
Robin Campillo, filmmaker: 'I don't see how a blacklist of French cinema could be enforced. Would it even be legal?'
The director criticizes conservative billionaire Vincent Bolloré, emphasizing the importance of unity in the film industry.