Organizers said the cooperation showed that Iraqis were united against prisoner abuse.
In 2007, he was put on trial for prisoner abuse but was declared innocent of the charges.
It is time for Congress to pass legislation to restore the courts as a needed check on prisoner abuse.
He said the military had created a culture where prisoner abuse was fully accepted.
Since the end of the war, scores of suits have been filed about prisoner abuse.
As preliminary findings of the Church report emerged, new details from other inquiries into prisoner abuse were also coming to light.
The Senate, by a vote of 92 to 0, adopted a resolution condemning the prisoner abuse.
She added that the letter "seemed pretty consistent with what had been in the news" about a Pentagon inquiry into prisoner abuse.
We came forward because of the larger issue that prisoner abuse is systemic in the Army.
The report concludes that American officials failed to react to early indications of prisoner abuse and to deal with them.
