The document is about the Khmer Rouge genocide in Cambodia. It discusses how the Khmer Rouge sought to create a utopian agrarian socialist society by violently evacuating cities and forcing collectivization of agriculture. Educated people and former members of the old society were killed or banned in what constituted a genocide. The genocide ended around 1979, but left a legacy of millions dead from executions, starvation, and disease. Survivors like Vann Nath and Dith Pran provided testimony about the regime's brutal secret prison and their experiences during and after the Khmer Rouge's rule.