“California Department of Corrections/PBSP-SHU policies and practices, have violated our human rights and subjected us to torture – for the purpose of coercing inmates into becoming informants against other inmates, etc., for the state,” writes one prisoner held in solitary at California’s infamous supermax Pelican Bay State Prison. This excerpt of his letter to the internationally renowned human rights organization, Amnesty International, is featured in Amnesty’s new report on the use of prolonged solitary confinement inside California’s ‘Security Housing Units’ (SHUs), entitled The Edge of Endurance: Conditions in California’s Security Housing Units.