“That’s the percentage of people in U.S. prisons who are ‘unnecessarily incarcerated,’ a new Brennan Center study claimed last week. The report, which took three years to complete, studied criminal codes, criminal-justice research, and prison populations throughout the country to determine how many prisoners are incarcerated without a justifiable public-safety rationale. It concludes that 576,000 inmates currently locked up for crimes ranging from mail fraud to simple burglary could be swiftly released without endangering their fellow Americans.”