Complex sentence: Some French critics argue that allowing Hollywood movies to compete against French films would be culturally destructive; hence free trade in culture must be limited, otherwise, the French language and the visibility of a French perspective on the world would be threatened.
Split into simpler sentences: Some French critics argue that allowing Hollywood movies to compete against French films would be culturally destructive. Free trade in culture must be limited, otherwise, the French language and the visibility of a French perspective on the world would be threatened.