Exclusive: Dustin Lance Black and challengers to Prop 8

Americans For Equal Rights is the behind the challenge to California's Ban on Marriage Equality. Two of the organization's founders, Academy Award Winner Dustin Lance Black and Chad Griffin, President of the Human Rights Campaign and former House Judiciary Committee Democratic Council Julian Epstein join MSNBC's Lawrence O'Donnell to discuss the challenge to Proposition 8 at the U.S. Supreme Court.March 27, 2013