Does this sound familiar? Muslim men are stripped in front of female guards and sexually humiliated. A prisoner is made to wear a dog’s collar and leash, another is hooded with women’s underwear. Others are shackled in stress positions for hours, held in isolation for months, and threatened with attack dogs.

You might think we are talking about that one cell block in Abu Ghraib, where President Bush wants the world to believe a few rogue soldiers dreamed up a sadistic nightmare. These atrocities were committed in the interrogation centers in American military prisons in Iraq, Afghanistan and Guantánamo Bay, Cuba. And they were not revealed by Red Cross officials, human rights activists, Democrats in Congress or others the administration writes off as soft-on-terror.

They were described in a painful report by the Justice Department’s inspector general, based on the accounts of hundreds of F.B.I. agents who saw American interrogators repeatedly mistreat prisoners in ways that the agents considered violations of American law and the Geneva Conventions. According to the report, some of the agents began keeping a “war crimes file”  until they were ordered to stop.

These were not random acts. It is clear from the inspector general’s report that this was organized behavior by both civilian and military interrogators following the specific orders of top officials. The report shows what happens when an American president, his secretary of defense, his Justice Department and other top officials corrupt American law to rationalize and authorize the abuse, humiliation and torture of prisoners:

 Four F.B.I. agents saw an interrogator cuff two detainees and force water down their throats.

 Prisoners at Guantánamo were shackled hand-to-foot for prolonged periods and subjected to extreme heat and cold.