Last Week Tonight with John Oliver: Prison (HBO)

John Oliver's back with another interesting viral vid, this time about the United States prison system. He starts off with saying "Our main story tonight contains something Americans simply can't get enough of. Prison." Watch as he explains why along with some interesting shockers like, did you know America has the greatest number of prisoners of any country in the world - nearly 1 in every 100 adults in America is in prison or jail...