Abusing the inmates is commonplace in U.S. prisons. According to a report released by U.S. Department of Justice in December 2007, an estimated 60,500 inmates, or 4.5 percent of State and Federal inmates, experienced one or more incidents of sexual victimization, 2.9 percent of the inmates reported an incident involving prison staff, 0.5 percent said they had been sexually victimized by both other inmates and staff, 0.8 percent of the inmates were injured as a result of sexual victimization (Sexual Victimization in State and Federal Prisons Reported by Inmates, U.S. Department of Justice, www.ojp.usdoj.gov/bjs). The U.S. government acknowledged in a January 16, 2007 report that suspected illegal immigrants were mistreated in five prisons, breaching the principle of humane custody (The Washington Post, January 17, 2007). The Washington Post reported on December 17, 2007 that juvenile inmates in a West Texas youth prison were sexually assaulted or beaten and denied medical care. Those who reported the crime got revenged upon and the situation remained unimproved months after the scandal was brought to light. (Dad Dismissed Prison Reform, The Washington Times, December 17, 2007).In January 2008, seven prisoners in Georgia State filed a class-action lawsuit accusing guards and other corrections officers of abusing and torturing them between October 2005 and August 2007, including beating them with batons and special black leather "beating gloves" and ramming inmates' heads against the wall. Media reports said some 40 inmates in other Georgia prisons complained of similar cases, in which guards strapped nude inmates to iron beds or iron chairs, denying them of food, water or access to bathroom for as long as 48 hours, and causing the death of two inmates (International Herald Tribune, January 8, 2008). Guards in American prisons regularly use taser guns. According to a 2007 report from Amnesty International, 230 Americans have died from taser guns since 2001. In July 2006, a prison in Garfield County, Colorado was accused of regularly using taser guns or pepper sprayers on inmates, and then tying them to chairs in awkward positions for hours. In August, prison guards in Arapahoe County of Colorado strapped inmate Raul Gallegos-Reyes to a restraint chair for yelling and knocking on his cell door. He died after being repeatedly stunned with a taser gun.

U.S. prisoners often die from HIV/AIDS infection or inadequate medical service. A report released by the U.S. Department of Justice in September 2007 said there were 22,480 state and federal inmates who were HIV infected or had confirmed AIDS at yearend 2005, 5,620 inmates had confirmed AIDS. During 2005 an estimated 176 state and 27 federal inmates died from AIDS-related causes (HIV in prisons 2005, U.S. Department of Justice, www.ojp.usdoj.gov/bjs). According to a report by the Los Angeles Times on September 20, 2007, 426 death cases took place in California prisons in 2006 due to belated treatment. Among them, 18 deaths were found to be "preventable" and an additional 48 were found to be "possibly preventable". On April 14, 2007, 41-year-old diabetic prisoner Rodolfo Ramos died after being left alone and covered in his own feces for a week. Prison officials failed to get medical treatment for him despite knowing of his condition (The Associated Press, April 27, 2007).

The justice of U.S. judicial system was increasingly put in question. Survey finds that since the first DNA exoneration in 1989, there have been 209 post-conviction DNA exonerations in the United States. The average length of time served by exonerees is 12 years. The average age of exonerees at the time of their wrongful convictions was 26, and 15 of the 209 people exonerated through DNA served time on death row (Facts on Post-Conviction DNA Exonerations, Innocence Project, www.innocenceproject.com). The Associated Press reported on January 3, 2008 that Charles Chatman of Texas was proved innocent by DNA evidence after spending 26 years in prison. In 1981, he was sentenced to 99 years in prison after convicted of committing serious sexual assaults. He was the 15th inmate exonerated by DNA evidence in Dalas since 2001 (Texas Man Exonerated by DNA After 26 Years, the Associated Press, January 3, 2008).