Behind Bars: The World's Toughest Prisons (2016)

S3E1 Urso Branco, Brazil

Urso Branco, a notorious pre-trial prison in Brazil, is infamous for its dire conditions. Since 2002, the facility has experienced annual riots as gangs clash for dominance over the drug trade, often targeting rival members with brutal efficiency. Over the past two decades, the violence has claimed the lives of more than 100 individuals during these uprisings, marking a grim chapter in Brazil's prison history.