Mobbed by iPhone cameras and pushy reporters, 23-year-old Nadia Murad leads a harrowing but vital crusade: to speak out on behalf of the embattled Yazidi community who face mass extermination by ISIS militants. Nadia is forced to revisit these realities again and again, for without her testimony the genocide happening right in front of the world’s eyes might go completely unnoticed. (Sheffield Doc/Fest)