America's incarceration rate was roughly constant from 1925 to 1973, with an average of 110 people behind bars for every 100,000 residents. By 2013, however, the rate of incarceration in state and federal prisons had increased sevenfold to 716. Compared with 102 for Canada, 132 for England and Wales, 85 for France, and a paltry 48 in Japan, the United States is the worlds' most aggressive jailer. When one factors in those on parole or probation, the...