I always have said, you know it's not for me to forgive or to condemn, I'm a filmmaker.

I believe every time you film anybody, you create reality with that person - whether it's fiction or nonfiction. If you acknowledge that filming is an occasion where people express things they might not otherwise express, that offers a much more insightful analysis of why documentaries - even of the fly-on-the-wall variety - are powerful. I think that our task as filmmakers is to create the most insightful reality given the most pressing questions.

The whole tradition of cinema is dominated, really, by films about good guys versus bad guys, good versus evil. But we have very few films about the nature of evil itself.

Films can't change the society, they can simply open the space for the discussion which can lead to social change and can start new forms of social activism. I feel formally that I've scratched the surface of something very important about the nature of nonfiction film, about what we're very rarely honest about: When you film anybody, they start performing.

I always have said, you know it's not for me to forgive or to condemn, I'm a filmmaker.

Each and every perpetrator was boastful, usually they would invite me to the places where they killed and I would of course accept those invitations because I could document what happened that way.

When you approach someone as a human being, truly and try to be as open as safety allows, some of the bigger reenactments with a whole army of paramilitary people participating, I couldn't say my feelings openly in front of everybody, without it being dangerous for my crew.