60th anniversary of March on Washington

Thousands of people will gather in the U.S. capital this weekend to honor a pivotal moment in civil rights history. It's the 60th anniversary of the March on Washington and Dr. Martin Luther King Jr.'s famous "I Have a Dream" speech. Arndrea Waters King, the late civil rights leader's daughter-in-law and president of Drum Major Institute, and Jonathan Greenblatt, CEO and national director of the Anti-Defamation League, talks about this weekend's event.