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Steven Pinker: A brief history of violence (21' 12") [TEDtalksDirector]
http://www.ted.com - In a preview of his next book, Steven Pinker takes on violence. We live in violent times, an era of heightened warfare, genocide and senseless crime. Or so we've come to believe. Pinker charts a history of violence from Biblical times through the present, and says modern society has a little less to feel guilty about.