In this clip from If a Tree Falls: A Story of the Earth Liberation Front, a former activist remembers the day that people climbed trees in order to protect them from being cut down for development. Police responded by using tear gas and pepper spray, sparking outrage and the radicalization of some of the protesters.
In this chilling video, Pol Pot's second in command, Nuon Chea (a.k.a. "Brother Number 2"), describes the decision they made to eliminate perceived "traitors" while they were in power. It's the first time a leader of the Khmer Rouge has admitted to ordering the killing of Cambodian people.