In the film “Capernaum,” 12-year-old Zain sues his parents for giving birth to him. He runs away from home after his parents sell his 11-year-old sister into marriage for a few chickens. He goes to the slums of Beirut, where he takes care of a woman’s baby, sells drugs to get by, and fights off sketchy characters. “Capernaum” won the Palme d’Or at this year’s Cannes Film Festival. It’s Lebanon’s entry for Best Foreign Language Oscar.