In this Mexican movie, Buñuel brings a great depiction of the lost youth, with no projects, committing crimes, practicing violence. Other films did the same afterwards, in my opinion with better outcomes, like Truffaut's "Les quatre cents coups" one decade afterwards, and Argentine "Pizza, birra, faso" half century later. Buñuel's concern about details which are not relevant for the story makes the film richer, and other elements important for Mexican society in those times also appear, such as sexism. Though, the movie gets a little bit tiring and the sudden end was very unsatisfactory. Not all characters behave in a way coherent to the traits shown in their development throughout the movie, particularly in the last moments.