The challenges of street casting are explored in The Worst Ones (Les Pires), an Un Certain Regard drama about a film within a film. Directed by Lise Akoka and Romane Gueret, it sees a film crew hit a working class French town, with thought-provoking and sometimes darkly funny results. Flemish director Gabriel (Johan Heldenbergh) is casting kids in Picasso, in the suburbs of Boulogne-Sur-Mer. His feature is about a pregnant teen and her younger brother, and he wants authentic local residents. The neighbors are surprised that he’s only casting “les pires” — what they consider to be the worst ones, or the hoodlums. But there’s raw talent in Lily (Mallory Wanecque) and hot-headed little Ryan (Timéo Mahaut).