The Islamic State's beheading of 21 Egyptian Christians in Libya on Sunday shocked the world with its brutality, and opened up a new frontier in the fight against the militant group. Still images from the video of the beheading circulated around the globe, showing a row of prisoners in orange jumpsuits, each with a jihadi executioner standing behind.
Geoff D. Porter, founder of North Africa Risk Consulting and assistant professor with the Combating Terrorism Center at West Point, says that this imagery plays on images of U.S. detainees in CIA black sites, Abu Ghraib, and Guantánamo Bay.