8/28: Nation honors Dr. Martin Luther King Jr.; Civil rights icons remember the March on Washington
Tens of thousands of people gathered in Washington, D.C., to celebrate the late civil rights leader and the 50th anniversary of the March on Washington; and, Marian Wright-Edelman, Andrew Young and Julian Bond were all a part of the March on Washington half a century ago. Scott Pelley speaks with them about that day, and what is left to be done.