Opinion: Why Martin Luther King Jr.'s sharpest question remains unanswered
Martin Luther King Jr.’s 1963 “Letter from Birmingham Jail,” even more than his “I Have a Dream” speech at the March on Washington for Jobs and Freedom, raised a vision for social justice and democracy that remains unfinished, writes Peniel E. Joseph, who argues that however distant we may feel from King’s life, his legacy is everywhere around us.