events, the group assault and murder of another inmate, the only killing in the jail in more than a decade. at the time, petrovich, in jail for receiving stolen property, was considered a leader among the white inmates at the theo lacy jail facility. >> we're standing in "f" barracks, the west side in the theo lacy facility, and this is the scene of a pretty gruesome homicide that occurred in 2006. it was the murder of inmate john derek chamberlain. it occurred in october. and it occurred over here in "d" cube. when the inmates drug chamberlain behind a privacy wall and out of view from the guard's station and, you know, savagely beat him to death. he was incarcerated for what we would consider a low-level sex-related offense. possession of child pornography. there's an inmate culture here that crimes against children are viewed as something that's