Poor People's Campaign asks America to face injustices

Shortly before his death, Martin Luther King Jr. called for an economic revolution with protections for the poorest Americans. Half a century later, a group of religious and moral leaders are planning a revival of the Poor People's Campaign, with a wave of civil disobedience in Washington. Rev. William J. Barber, co-chair of the Poor People's Campaign, joins Judy Woodruff for a conversation.