One of the most important documentaries about recent Brazilian politics, the authoritarian advancement, the lack of freedom of speech, and police brutality. With impressive violent footage and high quality interviews, the film explores serious issues through police behaviour in some core political demonstrations in São Paulo during four turmoil years which led Brazil to present situation, 2013 to 2016. Among those very issues are military police as heir of military disctorship and focused not in protecting citizens but in fighting enemies in part of society; vicious criminal behaviour of unskilled policemen inside corps which do not follow official rules (tortures and deceits); far right political bias in state repression; racism and mysoginy as accepted moral guides; the role played by great media in supporting that police repression against activists and the importance of independent press to restrain it. Those demonstrantions cover the street-side of the turn from stable but imperfect democratic years of some welfare priot 2013 to 2016 parliamentary coup, with various constititional violations in that painful path. The first protests started against public transport ticket prices, and there São Paulo police repressed them violently. Afterwards, there were protests against public spending in football world cup, also viciously repressed. Then, a hope breath: students occupied their own schools pressing for changes. Even those teenagers have been tortured by the police! When it came to demonstrations in favour and against 2016 coup, police has been celebrated by the former and visiously harassed the later (nobody told me that, I saw that also in Rio de Janeiro with my own eyes). Brazilian politics cannot be understood today without properly understanding those very years, and this deep documentary is very important in helping on that task. Essential movie on 2013-2016 Brazilian politics and its shapt turn into the hurricane.