Compathos Foundation has a great TV website with lots of material, video and otherwise, on what I'll call "Art for Change," including this video about how theatre helps change the world.
http://compathos.com/videoindex.php?vid=952&cid=81&page=1 As
Hope Sings starts to integrate music theatre for change into our mission, we'll be sharing more of these kinds of outlets and stories - what we can do with our hearts and arts is unlimited!