The sudden withdrawal of a film from the prestigious Tribeca Film Festival in New York touched off debate over a hot topic—the increasing effort to control what the public sees. Is it censorship, and who gets to decide? The film that sparked the controversy is Vaxxed. “Oh my God, I cannot believe we did what we did. Um, but we did.” It’s the story of a CDC scientist who says he and senior colleagues hid links between autism and MMR vaccine—for measles, mumps and rubella, particularly in African-American boys.