Reverend William J. Barber II is an American Protestant minister and political activist. He is the President and Senior Lecturer at Repairers of the Breach and co-chair of the Poor People's Campaign: A National Call for Moral Revival. Reverend William J. Barber II is an American Protestant minister and political activist. He is the President and Senior Lecturer at Repairers of the Breach and co-chair of the Poor People's Campaign: A National Call for Moral Revival.