Last Saturday, Hamas committed a horrific mass murder of men, women and children — the worst since the Holocaust. There is not a single Israeli family that hasn’t been personally affected by these crimes. Our families, children, sisters, brothers and friends were murdered in cold blood or taken prisoner to Gaza. These sights awaken deep-seated memories in every Jew on this planet — stories passed down from our parents and grandparents, recounting the days before the establishment of the sovereign state of Israel. But now, it is different, very different. It is remarkable to witness the Israeli civilian population standing...