Happy Pi Day!
Tonight's guests include:
Pastor David Bullock, national spokesperson of the Change Agent Consortium, president of the Detroit Chapter of Rainbow PUSH coalition and the Highland Park chapter of the NAACP. He was also one of the activists behind the traffic protests in Detroit today
Sister Simone Campbell, executive director of Network, a National Catholic Social Justice Lobby, and organizer of Nuns on the Bus
And here's executive producer Bill Wolff, in Los Angeles: