America has a serious problem.

Even though America has only 4% of the world’s population, we hold 25% of the world’s incarcerated prisoners. Statistically far more than so called less free countries, like North Korea, Russia, and China. 

Worse yet, the numbers have only accelerated over the past few decades. 

Hank Green of the Vlog Brothers discusses this serious problem of mass incarceration in the US in this enlightening and depressing educational animation