Nobel Peace Prize winner Kailash Satyarthi wants consumers to ask more questions. Satyarthi stars in the new documentary, The Price of Free," in which he rescues child slaves in India who work in factories, some of which supply U.S. stores. He told CBS News, "For every product, consumers can ask this question to the brand or shopkeepers, 'How can you guarantee that they are truly made without child labor?' That can be the starting point ... When consumers start asking questions, then [stores] have to find answers." Satyarthi said consumers have the power to hold businesses accountable for their practices. "It would not be too difficult to write to president of a company and ask, 'How will you ensure that your products are made without child labor?'" he said. "This is their moral and legal responsibility to ensure that no child exploit or labor is engaged. Brands cannot just escape." Satyarthi began his work freeing child slaves in India in 1981 and says he has saved more than 85,000 children since then. He has expanded his work to reach children around the world who are touched by not just slavery, but also trafficking, sexual abuse and other types of violence. The children come from poor families who are told they will be paid and taken care of; instead, they become enslaved under poor working conditions. He said that beyond the rescues, his organizations make sure the children have the social and educational support they need through government services before they are released.