In the fourth and final installment of "The United Nations at 75: Looking Back to Looking Forward," host Margaret P. Karns speaks with Bertrand Ramcharan, former acting high commissioner for human rights. In this candid talk, Ramcharan discusses why he thinks the "UN human rights system is in crisis" and details the complicated role of the high commissioner. Plus, ahead of the 72nd anniversary of the Universal Declaration of Human Rights, he explains why it is "the rallying document of our civilization."