On MLK Day, a ‘deeply moral argument’ about inequality

On Martin Luther King Day, we return to a segment we first aired last year, about an effort to revive one of Dr. King’s signature programs, what he called the Poor People’s Campaign. Judy Woodruff sat down with Reverend William J. Barber, co-chair of the 2018 organization, to discuss its mission of reducing poverty and inequality and tackling issues of social injustice.