The foid in those pictures was dishonourably discharged and sentenced to 3 years in prison. Hardly the actions of a government promoting such behaviour.
From Wikipedia:
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In response to the events at Abu Ghraib, the United States Department of Defense removed 17 soldiers and officers from duty. Eleven soldiers were charged with
dereliction of duty, maltreatment,
aggravated assault and
battery. Between May 2004 and April 2006, these soldiers were
court-martialed, convicted, sentenced to military prison, and
dishonorably discharged from service. Two soldiers, Specialist
Charles Graner and PFC
Lynndie England, were sentenced to ten and three years in prison, respectively.
Brigadier General Janis Karpinski, the commanding officer of all detention facilities in Iraq, was reprimanded and demoted to the rank of
colonel. Several more military personnel who were accused of perpetrating or authorizing the measures, including many of higher rank, were not prosecuted. In 2004, President Bush and Defense Secretary Donald Rumsfeld apologized for the Abu Ghraib abuses.
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