AdvertisementCourts Take A Kinder Look At Victims Of Child Sex TraffickingPlay09:56Download AudioMarch 01, 2014NPR StafffacebookEmailAn ad on a bus shelter in New Mexico is part of an ongoing effort to educate law enforcement and the public about human trafficking. The Justice Department estimates that each year at least 200,000 children are trafficked for sex in the U.S. (AP)