I recently watched the documentary film Born Into Brothels (2004,R).  From Wikipedia:

Briski, a documentary photographer, went to Kolkata (Calcutta) to photograph prostitutes. While there, she befriended their children and offered to teach the children photography to reciprocate being allowed to photograph their mothers. The children were given cameras so they could learn photography and possibly improve their lives. Much of their work was used in the film, and the filmmakers recorded the classes as well as daily life in the red light district. The children's work was exhibited, and one boy was even sent to a photography conference in Amsterdam. Briski also recorded her efforts to place the children in boarding schools.

It was great seeing the joy that the cameras and learning brought to the kids lives and, of course, heartbreaking to witness the conditions in which they live.

I give it 4 out of 5.