Omparison of Pixote, the Law of the Weakest and City of God

It has to be a film analysis essay that compares two films (Pixote, the Law of the weakest and City of God). The paper has to show how these two films portray the adolescent violence in Brazil and also has to include technical film analysis (such as talking about visual and auditory techniques that support the theme(adolescent violence) and how it supports it).