Palestinians have used nonviolent protest as a form of resistance for decades, and always some died, whether through bullets or tear gas canisters or physical attack. Too often, young men with pent-up anger at a lifetime under occupation have thrown stones or pulled a knife, which never ends well. But this - this has the potential to be a Big Deal. No doubt parallels will be drawn to Civil Rights marches. Will the IDF be able to contain itself, or will shots "have" to be fired? Does Israel even know how to do that?