This week on “The Learning Curve," Cara and Gerard are joined by Taylor Branch, Pulitzer Prize-winning author of a landmark trilogy on the Civil Rights era, America in the King Years. They discuss the life and legacy of the Rev. Dr. Martin Luther King, whose birthday the nation observed on Monday. They review Dr. King’s powerful, moving oratory, drawing on spiritual and civic ideals to promote nonviolent protest against racial injustice, and how, as head of the Southern Christian Leadership Conference, he shared leadership of the movement with organizations such as the Student Nonviolent Coordinating Committee.