Pixote
Pixote: A Lei do Mais Fraco (original)
10-year-old Pixote endures torture, degradation, and corruption at a local youth detention center where two of its members are murdered by policemen who frame Lilica, a 17-year-old trans hustler. Pixote helps Lilica and three other boys escape and they start to make their living by a life of crime which only escalates to more violence and death.
Starring Fernando Ramos da Silva, Jorge Julião, Gilberto Moura, Edilson Lino, Zenildo Oliveira Santos, Claudio Bernardo, Israel Feres David, Jose Nilson Martin Dos Santos, Marília Pêra, Jardel Filho
Watch "Pixote" on Criterion Channel released in 1980. It's a drama and crime movie, and has a rating of 7.9 out of 10 from Imdb which is usually fine for this kind of movie.