Sidney Poitier appears at the Cannes Film Festival for his film “A Raisin in the Sun” on May 13, 1961. Claudia McNeill and Sidney Poitier in the film “A Raisin in the Sun.” Brooks Atkinson notes in “Broadway,” a chronicle of his years as drama critic, that “Sidney Poitier, who had become a Hollywood star, played the leading part in …