Child prostitution and human trafficking are hardly remnants of an imperialist era. They're still global phenomena, and a film screening this Tuesday at the Drexel aims to bring them out of the underworld and into the light of scrutiny.

Child prostitution and human trafficking are hardly remnants of an imperialist era. They're still global phenomena, and a film screening this Tuesday at the Drexel aims to bring them out of the underworld and into the light of scrutiny. Incorporating undercover investigative reporting with an impressive list of talking heads, Call + Response reveals one of world's most sobering secrets: an estimated 27 million people are currently caught up in the global slave trade - more than the number of people who have been enslaved in human history. Its call for education and activism comes through insights from the likes of Nicholas Kristof, Cornel West and Madeleine Albright, along with performances by Talib Kweli, Matisyahu and Tom Petty's Heartbreakers.