An article was written by Tory Foster, Graduate Student in Planning at the University of Arizona, regarding public art as a means for social change. It was published in MIT's planning journal,PROJECTIONS, Volume 8.
ART IS CHANGE: Public Art as a Means of Ecological Healing, Tory Foster
*You will have to google it to find the download of the 12 page article. I was unable to make a hyperlink for the journal. It is a great read. Think, then act with your conversations.