Most of us will never know what really happens behind bars. Prisons are generally off limits to the public and press, but a national prisoner strike on the 45th anniversary of the Attica Prison riot is drawing new attention to the conditions in many of our nation's jails. This hour, what should a prison be? How The Attica Prison Riot Fueled Mass Incarceration in America; Working Undercover As A Private Prison Guard; In Defense of Flogging; Norway's Unusual Approach to Imprisonment; How To Reduce Mass Incarceration; Exploring the Emotional Roots of Justice.