FILE - Dr. Martin Luther King Jr. acknowledges the crowd at the Lincoln Memorial for his "I Have a Dream" speech during the March on Washington, D.C. on Aug. 28, 1963. A new documentary âMLK/FBI,â shows how FBI director J. Edgar Hoover used the full force of his federal law enforcement agency to attack King and his progressive, nonviolent cause. That included wiretaps, blackmail and informers, trying to find dirt on King. (AP Photo/File) There is still work to do in achieving the Rev. Dr. Martin Luther King Jr.’s dream of more than 50 years ago, Valley clergy and activists say, a...