What were they thinking?

Click here to read Nicholas Kristof's recent NY Times Op-Ed, "Slavery isn't a thing of the past,"  focusing on the approximately 60,000 human trafficking victims in the United States.  Reflecting on the popularity of the recently-released film, 12 Years a Slave, Kristof concludes, " I fear that a century from now someone may put together a film about slavery in 2013, leading our descendants to shake their heads and ask of us: What were they thinking?"