The April issue of More magazine includes a profile of Malika Saada Saar, a human rights attorney. One of her areas of specialty is fighting human trafficking. She led the effort to shut down the adult services section of Craigslist in 2010. In 2011 she co-founded a human rights organization called Rights4Girls that helps raise the awareness of child sex trafficking in the US. The article, by Sharon Cotliar, mentions that Saar grew up in Philadelphia. I can't find the article online but the print issue is still on newsstands.