Paul Coates’ “Boy in a Box,” directed by Thomas Zoeschg at the Whitefire Theatre, is an unsettling one-man examination of race, history and confinement. The show follows Alexander MacMillian (Coates), a history professor who adopts a homeless “crack baby” and raises him inside a box. Through direct narration and pointed audience interaction, Alexander dissects America’s racial legacy and forces us to confront the psychological and literal consequences of living within imposed