Atrios is pointing to a Washington Post article that says documents obtained by the Post indicate several photographed victims of abuse were not being softened up for interrogation, but were being punished for crimes or simply being treated as toys for their jailers' amusement.
First we were told these instances of abuse were isolated incidents. Then we were given the interrogation 'non-excuse excuse' for torturing prisoners. (I say it's a "non-excuse" because the need for information doesn't excuse rape and other torture.) Now we're being told that instances of abuse are fairly commonplace and being carried out by a number of individuals meting out their own form of justice, or simply appealing to their own sadistic tendencies.