About forty minutes into Risk, Laura Poitras’s messy documentary portrait of Julian Assange, the filmmaker addresses the viewer from off-camera. “This is not the film I thought I was making,” she says. “I thought I could ignore the contradictions. I thought they were not part of the story. I was so wrong. They are becoming the story.” By the time she makes this confession, Poitras has been filming Assange, on and off, for six years. He has gone from a bit player on the international stage to one of its dramatic leads.