Roger Ebert, who died in 2013, was a beloved national figure and one of the best-known and most influential movie critics. Academy Award-winning director Steve James talks about his documentary “Life Itself,” about Roger Ebert’s life and career. He’s joined by Ebert’s widow, Chaz Ebert. The film recounts his journey—from politicized school newspaperman to Chicago Sun-Times movie critic to Pulitzer Prize winner to household name to his “third act” as a major voice on the Internet when he could no longer physically speak. It opens July 4 at the Landmark Sunshine Cinema and the Film Society of Lincoln Center.