After its soldiers conducted a massacre against unarmed protesters in Gaza, Israeli leaders should be prosecuted by the International Criminal Court, argues Marjorie Cohn. On March 30, Israel Defense Forces (IDF) soldiers shot 773 unarmed Palestinian protesters in Gaza, killing 17 and wounding 1,400. Twenty remain in critical condition. The protesters were marching to demand the internationally mandated right of return of refugees to their cities and villages in what now constitutes Israel.