When I saw La Sierra I couldn't believe my eyes. This filmmakers went to Medellín, one of the most violent cities in Latin America, to make a documentary about this very young people who live in the most terrible conditions, and do unimaginable things to the eyes of people who live in the comfort and safety of first-world countries. I am from Caracas, Venezuela, and I understand and see all the problems that this young kids suffer every day. I totally recommend this movie: every single story is touching -Maybe not Hollywood or Europe touching, probably that's why people cannot understand how a 10-year old boy drinks beer or 14 year-old girls have babies. But drugs, underage parenthood or even the bloody war between guerrillas and paramilitaries forces is not what this documentary is really about: it is about redemption and you have to discover it by yourself. The photography, composition, editing and scoring are excellent, even though the hell of problems that the filmmakers,I guess, went through. Is the best documentary about people from Latin American barrios that I ever seen.