On 28 June 1995 in Aguas Blancas village,Guerrero, Mexico, 45 countrymen were traveling in a truck which was attacked by state police. 15 men were killed and 22 were wounded.This case, like so many in Mexico,remained unknown until a police video of the ambush came out a year later and led to an investigation. The people responsible were never found; the case was closed. In 2005 I was writing the script for my first film-school film when I realized that the tenth anniversary of Aguas Blancas was hardly mentioned in the news. I remembered the video I had seen 9 years ago. My script took shape by reading the survivors’ testimonies, and putting them together. Testimony and anecdote became dialogue and action. The shock these images caused me when I saw them again was so strong, I felt it was necessary to do something: to show the reality from a survivor’s point of view, and in this way, to create a living memory of the event.