Tyrnauer pulls no punches in his new Showtime documentary series “The Reagans” in which he explores the life and political impact that the 40th president had on the future of the conservative movement, casting a negative light on the role that his Hollywood ties played in shaping the country’s image of him and Nancy Reagan. “The whole Reagan legacy is a brilliantly confected myth,” he told The Hollywood Reporter in an interview. “The real Ronald and Nancy Reagan are virtually unknown. They learned how to myth-make from the best, who supported them: [Warner Bros. founder] Jack Warner, [legendary gossip columnist]...