A friend of mine called me last week from prison. We hadn’t spoken in a few months, so we did a lot of catching up, mostly talking about how things were at the prison, friends, and the many turns my own life has taken. I told him that a mutual friend of ours was at the new private prison in Milledgeville, Ga., a place called Riverbend Correctional Facility. He groaned and told me he had heard only bad things about the place. Dozens of the most troublesome inmates at his prison had been sent to Milledgeville to populate the 1,500-bed facility run by the GEO group.