Propeller Films, in partnership with Facing History and Ourselves, created a series of videos from the feature length film Watchers of the Sky. The series of films follows Raphael Lemkin, Benjamin Ferencz, Luis Moreno-Ocampo, and the historical events that inspired them to take action against genocide. Use this resource with your students to explore the ongoing struggle to apply the rule of law to punish and prevent crimes of mass violence.