Art can be a powerful avenue of resistance to oppressive governments. During the dictatorship of Augusto Pinochet in Chile, some of the country's least powerful citizens-impoverished women living in Santiago's shantytowns-spotlighted the government's failings and use of violence by creating and selling arpilleras, appliqu d pictures in cloth that portrayed the unemployment, poverty, and repression that they endured, their work to make ends...