"The Shiva effect"- Anderson

A documentary film well worth the viewing:
Favela Rising
The film is the story of Anderson and the AfroReggae Movement as motion to create postive change and sustainable growth through music and dance.

and if you are moved by Favela Rising-
you may want to check out
City of God
although not a documentary film; there are aspects from City of God that certainly tie into Favela Rising-