What responsibility does a movie have to the details of history? In Sofia Coppola’s new film, “The Beguiled,” a remake of Don Siegel’s 1971 psychological thriller set in the American South during the Civil War, she omits a key character from the original film: a slave woman named Hallie. Is Coppola’s omission a correction of history or an act of artistic cowardice? Speaking of history and responsibility: We take a look at “All Eyez on Me,” which tells the story of the brief but remarkable life of Tupac Shakur. At a time when the safety of black men’s lives seems dubious, is there significance in people’s refusing to accept that Tupac is truly dead?