The wasted land is a documentary of Vick Muniz a Brazilian artist that describes himself in the documentary as a poor boy that had grown up with nothing and end up to be one of the best selling artists in brazil.
The wasted land was release in 2010 it was shot in Jardim Gramacho, one of the world's largest landfills located in Rio de Janeiro Brazil, where men and women gather to recycle garbage. To have a better opinion of the situation Vick flew to brazil to see the situation himself and he said in the documentary that “I was expecting to see people who were beaten and broken. But they are survivors.” By watching the documentary we can see that these people are very proud there is violence everywhere near them they could choose the easy way like everyone and be a gang member or prostitute but instead, they are collecting garbage to earn their lives worthily. By spending time there with them Vick will pick some and make a portrait of them throughout the documentary.
His objective on that project was to change the life of a group of people with the same material they deal with every day. So he had them involve in the project, he said that he did want people to say Vick did it but we di dit so he starts by taking pictures of them questions how they end up there it was some kind of therapy. And after they assist   
About art and social change, we can see that Vick help these people to get a better life at the end of the documentary he help one of the guys sell his portrait in an auction. On a presentation at Boston University, Vick said « the creativity comes from necessity. » We can interpret that by saying that when you have nothing when you are in a tough time you are more likely to find a good idea in order to leave that situation you are in.  Also in society artist are the ones who bring changes to societies by the artwork they are doing.