Moives, How do you put them in geners?

Over the weekend I watched the movie "Born into Brothels". I found it to be a very interesting moive. The whole story line was about children growing up in the sex trade, but not really wanting to be involved. This women comes in and teaches them how to take pictures to find a way to get them. All through the movie it went from live flim to still pictures. By doing this the director gave me an emtion. He made you look at the lives that these children and not only feel bad for them but know that they have the chance to get out. Through all of this I found myself looking at what gener I would put it in. It was a documentary but I thought it as more of the story of the childrens lives. It was a drama that made you want to do something to help them and get them out of this horrible place.