Photographer Wendy Ewald travels around the world teaching children to use photography to express their thoughts and feelings. Take a child who is relatively powerless and give him a camera, and suddenly that child is empowered by the chance to express himself. Ewald recalls a little Indian boy named Pratap. When Ewald handed him a camera, Pratap began to shake all over. He explained that he was a Harijan, a member of the lowest, untouchable caste in India. Harijans aren't allowed to hold cameras. Pratap was afraid of even touching one. But Wendy Ewald insisted that he take the camera and use it to share his ideas. A few days later, Ewald passed Pratap's house. He was posing his family for a picture. The scared, self-conscious little boy was bursting with self-confidence. A simple camera h…