FILE PHOTO: 70th Cannes Film Festival - Photocall for the installation "Carne y Arena" (virtually present, physically invisible) presented as part of virtual reality event - Cannes, France. Director Alejandro Gonzalez Inarritu poses. REUTERS/Stephane Mahe PARIS (Reuters) - ?Birdman? and ?21 Grams? director Alejandro Gonzalez Inarritu will head the jury at the 2019 Cannes Film Festival in May, becoming the first Mexican to do so, organizers said on Wednesday.