The human cost of violence is on display in 'Stop the Violence' by Francois Robert. This collection of photographs is made of actual human bones, and depicts tools and reasons for going to war.
The best way to get a message to people is to show them the human cost of things. People don't really want to hear problems unless those problems adversely affect their personal lives. Francois Robert's 'Stop the Violence' project literally shows the human costs of war. Follow the links if you are interested in checking out more of Francois Robert's amazing work.