A Massacre Foretold is based on a real massacre of ho many people?
A Massacre Foretold:  The film was released 10 years after the Acteal massacre in Chiapas, Mexico, of which the film is an account. Acteal massacre: The Acteal massacre was a massacre of 45 people attending a prayer meeting of Roman Catholic indigenous townspeople, including a number of children and pregnant women, who were members of the pacifist group Las Abejas ("The Bees"), in the small village of Acteal in the municipality of Chenalhó, in the Mexican state of Chiapas.
45