“The reasoning is clear: the combination of excessive incarceration and harsh punishment is a blunt instrument for social control that perpetuates the country’s painful, historical legacy of injustice and inequality, and deprives masses of black and brown people unfairly of freedom and opportunity. It is the site of today’s civil rights struggle.”

http://www.aclu.org/criminal-law-reform/ending-mass-incarceration-charting-new-justice-reinvestment