Through powerful first-person accounts, scholarly analyses and historical data, Century of Genocide takes on the task of explaining how and why genocides have been perpetrated throughout the course of the twentieth century. The book assembles a group of international scholars to discuss the causes, results, and ramifications of these genocides: from the Armenians in the Ottoman Empire; to the Jews, Romani, and the mentally and physically handicapped during the Holocaust; and genocides in East Timor, Bangladesh, and Cambodia.

The second edition has been fully updated and features new chapters on the genocide in the former Yugoslavia and the mass killing of the Kurds in Iraq, as well as a chapter on the question of whether or not the situation in Kosovo constituted genocide. It concludes with an essay concerning methods of intervention and prevention of future genocide.