Humanity has lived in, with and on the profits of slavery for most of its history. Many of its greatest achievements and monuments have tragically been built on the backs of slave labor. How could people place their economic needs ahead of the humanity of their fellow beings? How could this horrific system have lasted for so long? In this documentary track the history of slavery from Ancient Greece, to the Crusades, to the colonization of the new world and the racial slavery that sparked the American Civil War. The journey from slavery to freedom is incomplete and continues as there are still over 20 million people enslaved today.