Play of the Day: America's Prison Population, Explained

The death penalty isn't the only controversy in criminal justice. America now has a prison population equal to that of the entire country of Slovenia, and John Oliver is ready to explain how we got there. (There is even aSesame Street episode devoted to the topic, if you have small children.)

Plus: The highest court just got a little higher, and joint sessions of Congress may have a whole new meaning. Washington, D.C., joined the growing list of marijuana decriminalizers.