The great Spanish director Luis Buñuel directed some 20 films whilst living in Mexico between 1946 and 1965, the most enduring of which is Los Olvidados, a stunning portrait of slum kids in post-World War II Mexico City. It's a morally ambiguous work. Crucially, it's devoid of sentimentality: the poor do not suffer nobly, the disabled are not saints, and human beings are reduced to the level of animals. It's a hugely influential film, foreshadowing the likes of A Clockwork Orange and Kids, and its matter-of-fact brilliance continues to astonish.
- Tom Dawson, BBCi Film .

A great, great movie, Los Olvidados (The Forgotten Ones) is the means by which exiled Luis Buñuel re-established his international reputation. This low-budget account of Mexico City street kids, inspired by actual cases as well as Buñuel's impressions of his new country, is a masterpiece of social surrealism and the founding work of third-world barrio horror. The weak prey on the weaker, dogs dress as people, and people die like dogs. The title is in part ironic: once seen, this movie can never be forgotten.
- J. Hoberman, Village Voice.