From Wikipedia: "Public figures can be photographed as part of their function or professional activity... A photograph of a public figure taken as part of his private life therefore still requires explicit authorization for publication. Thus, the Prime Minister cannot oppose a journalist photographing him at the exit of the Council of Ministers or during an official lunch, but he can prohibit the publication of photographs representing him at an event in his private life, such as a family reunion.”
https://fr.wikipedia.org/wiki/Droit_à_l%27image_des_personne...