An investigation into the origins and ideology of the rebel group and its bloody rise.
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A Palestinian man shouts for help moments after Palestinian teen, Mohammad Abu Daher, on the ground, was shot to death by Israeli troops near the West Bank city of Ramallah on May 15, 2014. (AP/MAJDI MOHAMMED)
The teens were killed last Thursday during a protest on the 66th anniversary of the 'Nakba', or "Catastrophe", marking the displacement of Palestinians during the 1948 war that led to the creation of Israel. Muhammad Abu Daher, 15, and Nadim Nowarra, 17, were part of a group of protesters throwing rocks at Israeli soldiers at a military prison outside Ramallah.