Breaking the Cycle is a documentary which is available on Netflix. The film centres on the warden of Halden, a prison in Norway which is recognised as one of the most humane in the world, and his experience of touring the US prison system. Themes include prison, rehabilitation, justice, human rights and cultural identity.  Trailer: https://www.youtube.com/watch?v=3QNCwLEobZI

Law School further recommends

Michelle Alexander: The New Jim Crow: Mass Incarceration in the Age of Colourblindness - This books draws parallels with the Jim Crow laws and the prison system in the US. The author argues that in the same way that black people were targeted and disadvantaged by Jim Crow laws the current penal system in America disproportionately affects people of colour. Themes include, penal system, civil rights, justice, equality, society.