Actor Roschdy Zem poses during a photocall for "Oh Mercy! (Roubaix, une lumiere)" at the 72nd Cannes Film Festival in Cannes, France, May 23, 2019. "Oh Mercy! (Roubaix, une Lumiere)" will compete for the Palme d'Or with 20 other films. (Xinhua/Gao Jing)