This video is excerpted from the Season 5 episode Compassion premiering on Wednesday, October 7, 2009 at 10pm (ET) on PBS (check local listings). Compassion features three artists—William Kentridge, Doris Salcedo, and Carrie Mae Weems—whose works explore conscience and the possibility of understanding and reconciling past and present, while exposing injustice and expressing tolerance for others. Doris Salcedo was born in 1958 in Bogotá, Colombia, where she lives and works. Salcedo’s understated sculptures and installations embody the silenced lives of the marginalized, from individual victims of violence to the disempowered of the Third World. Although elegiac in tone, her works are not memorials: Salcedo concretizes absence, oppression, and the gap between the disempowered and powerful. While abstract in form and open to interpretation, her works are essential testimonies on behalf of both victims and perpetrators. Even when monumental in scale, her installations achieve a degree of imperceptibility—receding into a wall, burrowed into the ground, or lasting for only a short time. Salcedo’s work reflects a collective effort and close collaboration with a team of architects, engineers, and assistants and—as Salcedo says—with the victims of the senseless and brutal acts to which her work refers.