Before ISIS: A history of beheadings to terrify, punish PBS News Weekend(01)

Before ISIS: A history of beheadings to terrify, punish PBS News Weekend(01)

Image gallery: Liveleak Beheading

Turkish-Backed Rebel Group Executes Kurdish Prisoners - Video - NYTimes Before ISIS: A history of beheadings to terrify, punish PBS News Weekend Q&A: The Man Behind LiveLeak, The Islamic State’s Favourite Site For