The moral queasiness that we must feel about this method of extracting information from those in our clutches has all but disappeared these days, thanks to the national shame of “enhanced interrogation techniques” at Guantánamo. Those in isolation can get out by naming names, but if they do so they will likely be killed when returned to a normal facility. To “debrief” is to be targeted for death by gang members, so the prisoners are moved to “protective custody” — that is, another form of solitary confinement.

Hunger strikes are the only weapon these prisoners have left. Legal avenues are closed. Communication with the outside world, even with family members, is so restricted as to be meaningless. Possessions — paper and pencil, reading matter, photos of family members, even hand-drawn pictures — are removed. (They could contain coded messages between gang members, we are told, or their loss may persuade the inmates to snitch when every other deprivation has failed.)

The poverty of our criminological theorizing is reflected in the official response to the hunger strike. Now refusing to eat is regarded as a threat, too. Authorities are considering force-feeding. It is likely it will be carried out — as it has been, and possibly still continues to be — at Guantánamo (in possible violation of international law) and in an evil caricature of medical care.

In the summer of 1996, I visited two “special management units” at the Arizona State Prison Complex in Florence. A warden boasted that one of the units was the model for Pelican Bay. He led me down the corridors on impeccably clean floors. There was no paint on the concrete walls. Although the corridors had skylights, the cells had no windows. Nothing inside could be moved or removed. The cells contained only a poured concrete bed, a stainless steel mirror, a sink and a toilet. Inmates had no human contact, except when handcuffed or chained to leave their cells or during the often brutal cell extractions. A small place for exercise, called the “dog pen,” with cement floors and walls, so high they could see nothing but the sky, provided the only access to fresh air.