This group was involved in the trafficking of a groups of boys who performed under the name Zambia Acapella Boys Chior. Here are links to a CNN and an NPR story about the organization.
http://www.cnn.com/2010/WORLD/americas/11/25/wus.slave.choir/
http://www.npr.org/2012/02/28/147580896/the-hidden-faces-of-modern-day-slavery
Review from Guidestar