Next weekend, we will celebrate the 50th anniversary of the March on Washington for Jobs and Freedom, best known for Dr. Martin Luther King’s “Dream.” Fifty years later, the dream challenges us yet. It is alive because it is not static. The dream of equal rights and equal opportunity, of being judged for character, not color, has transformed this nation. Much progress has been forged; much remains to be done. One way to think about the Civil Rights Movement and Dr. King’s Dream is as a symphony of freedom. The first movement was the movement to end slavery, which required …