An important British legal case is at the heart of “Denial,” a true story that pits an American historian against a British Holocaust denier. Deborah Lipstadt (Oscar-winner Rachel Weisz) is sued by writer David Irving for libel when she calls him a liar for his antisemitic claims. Susan and Russ have very different takes on this drama written by David Hare (“The Hours”) and directed by Mick Jackson (“Live from Baghdad”).