He is a believer in the death penalty, but went through the programme appalled by the torment suffered by prisoners. During the programme he researched, and found, a humane way of killing a prisoner. Then, he took it to a leading advocate of capital punishment in America, only to be told it wasn't painful enough.
Like I say, I have no understanding of this attitude, but I suspect the prison rape issue in the US won't change until the majority of people get past the idea that the prime thing to do to criminals is punishment.