Injustice: a film about crime, prison and us. (2017)

Tommy and Gethin are good lads who've been through some hard times. Gethin's growing up in a dysfunctional family led him to heroin. Tommy blew his chances, preferring to fight and deal drugs. Both ended up in behind bars for years. Injustice looks at their experiences, and folds in academics, activists, and even prison governors and monitors to ask why do we have prisons and what do they do.