A producer for “The Hunting Ground,” a film about campus sexual assault, admitted in an email that the film was less documentary than propaganda.

Amy Herdy, who helped interview cast members, sought in a Dec. 21, 2013 email to speak to Erica Kinsman, who had accused former Florida State University quarterback Jameis Winston of rape. In Herdy’s email to Kinsman’s then-lawyer, Patricia Carroll, the film’s investigator assured her subject that the film was not about the truth, but about advocacy.