When Presumed Guilty – the nightmarish tale of a street vendor in Mexico City who was twice wrongly convicted of murder – was released in 2011, it won an Emmy for investigative journalism, broke Mexican box-office records, and triggered a fierce debate over the country‘s dysfunctional judicial system.

Nearly three years later, as important legal rulings are expected in two cases over the documentary, the film is banned in Mexico and the director has recieved death threats.