Carandiru (2003)

Showing the inmates' relationships with each other, their struggles for survival, and their attempts to find moments of joy and humanity within the confines of the prison walls, the movie counter the story around the tragic Carandiru massacre of 1992, in which a riot broke out, leading to the deaths of numerous inmates. A realistic and gritty portrayal of the social issues plaguing Brazil's penitentiary system, with a powerful storyline: you must watch and know about it!