Inner Hallway, connecting multiple pods of cells, Pelican Bay SHUCredit: Monica Lam, Center for Investigative ReportingExercise Yard, Pelican Bay SHUCredit: Monica Lam, Center for Investigative ReportingTodd Ashker, 2014Credit: Courtesy of Todd AshkerGeorge Jackson, San Quentin, circa 1970Credit: From the Freedom Archives collection, photographer unknown.Violent Deaths in the California Department of Corrections, 1970-1990Credit: Statistics compiled by the author from a combination of publicly available documents and archival reports. Raw numbers and specific sources available upon request.Aerial shot of the Security Management Unit I, Florence, ArizonaCredit: © Christopher Gielen, Untitled Arizona XV, from Hidden Sites: A Guide to the American Supermax System, courtesy of Jovis Verlag, BerlinAerial shot of Pelican Bay State Prison: the x-shaped structure towards the top of the image is the SHU, and the buildings arranged in semi-circles in the foreground are general population units and administrative buildingsCredit: Jelson 25 / Wikimedia Commons / CC BY 3.0tPrisoner's drawing of a SHU podCredit: Drawing by Arturo MendozaExample of a prisoner drawing that could be used to "validate" a prisoner as a gang memberCredit: Drawing by Arturo MendozaExample of a prisoner drawing that could be used to "validate" a prisoner as a gang memberCredit: Drawing by Arturo MendozaCell, Pelican Bay SHUCredit: Monica Lam, Center for Investigative ReportingPrisoner's diagram of a SHU cellCredit: Drawing by Frank Alejandrez