We make violent cops, we make violent criminals, and no wonder we have shootouts in slums all of the time.

No wonder we have a lot of violence in Rio: the corrupt and violent policemen meet the violent criminals in the streets. What else is going to happen?

As it turns out, what looks like science sometimes is not.

In Rio de Janeiro, every cop has to make a choice. He either turns dirty, keeps his mouth shut, or goes to war.

I come from a documentary background and my natural tendency, as a filmmaker, is to make a movie, if I have something to talk about. If it's not about anything that matters, I don't feel like doing it. I'm not against people who make movies just for fun, but I'm not one of those guys. I just want to provoke thinking and debating about certain issues.

Well, I'm not that popular with the politicians, I have to say.

Measurements, observations, descriptions can only be considered scientific when they are independently confirmed by other people.