Say what you will about root causes and immediate ones — about incitement and militancy, about siege and control, about who did what first to whom — one thing is clear. More than a decade of deprivation and desperation, with little hope of relief, has led thousands of young Gazans to throw themselves into a protest that few, if any, think can actually achieve its stated goal: a return to the homes in what is now Israel that their forebears left behind in 1948.