Inspired by an unfinished James Baldwin book about the assassinations of black leaders in the 1960s, Raoul Peck’s documentary brings Baldwin, who died in 1987, into the 21st Century, where his scorching appraisal of the history of race in the US is, unfortunately, as timely as ever. Drawing from decades of Baldwin’s writing and public statements although rarely touching Baldwin’s work on sexuality the movie is less a summary than a sance, with Samuel L Jackson’s impassioned narration all but bringing him back to life.