Mira Sorvino has become a U.N. Goodwill ambassador regarding the issue of human trafficking. She has really immersed herself in this issue, traveling and speak out for this cause. She isn't a figurehead, but she is passionate about it and is involved with the nuts and bolts. She has visited with victims, and is collecting their stories so she can disseminate them to the unknowing world.
I'm highly impressed with Ms. Sorvino, and I encourage you to check out this short video.