"Tropa de Elite" is a movie to watch over and over again. Has a great argument, screenplay and an excellent performance from all the cast, especially Wagner Moura, who deserves all the awards he can go to this great performance.
Basically, the film explores the struggle between drug dealers and corrupt police officers against "good", some of them military and police force more of them BOPE (Brazilian Swat). This is the way the director Padilha see this fight that is not entirely true. Although he shows how corruption works Military Police in Brazil, as the system is used against itself and how the bureaucracy makes it so difficult that it is almost impossible for honest people to deal with their own personal problems without dealing with corruption. And by the way, this is entirely true, the film is fiction but with a tone so realistic and impressive to see.
The film has all the elements that make us go to a movie. He has a history, has action thriller, and has a great performance of the cast, all of them. It's a true MASTERPIECE!