I think that it gave me a really strong feeling of my life force and a confidence in myself. I felt like I was a man. Before that point for some reason, I always felt I was a boy (laughter). In fact, they called me the baby on the ship 'cause I was the youngest guy on the ship. But I always felt that way.

I've been in wars and in riots and hung out of many helicopters in the early days. And there's a detachment that happens when you look through the camera. You're looking for the shot.

That force - which the system tried to laugh at - when it finally broke through and the movement was recognized, the media said they were "just a bunch of spoiled kids, dope smokers [who] don't know what the hell they want." To demean it as something laughable - but that didn't work for very long. It's still an ongoing struggle; they're trying to find out how to fight. It's very exciting times.

I was shooting all this time. And there was only one guy who helped to pull him. And I had to think whether I was going to keep shooting or help the guy. And so I kept shooting and then they put him in this little clinic, and I photographed through the window while they had to amputate his leg. And I felt very strange because I didn't - I felt I could have helped, but I didn't help. But then I also felt elated that I was getting a shot that would be important to the film.

There was no actually stock footage in "Medium Cool." I wrote the script. I wrote the riots. And I integrated the actors in the film in the park during the demonstrations. But nowhere was it like we had stock footage and then later, in editing, integrated it into the film. It was all done at the time.

Not one Wall Street executive has been charged with crimes since the 2008 financial crash.

There is a very particular feeling I get when I have the camera in my hand, looking at an actor talk, knowing that what I’m shooting will end up on the screen.