Hamas slaughters hundreds of innocent Israeli civilians and holds hundreds more hostage, yet somehow many on the left put both Israel and the terrorists on the same moral plane. Why exactly is that? Well, if silence is complicity, as it’s said, then New York’s own Sen. Chuck Schumer — arguably the most powerful Jewish figure in America — shares much of the guilt. Sure, New York’s senior senator occasionally laments the steady, overwhelming bias Israel faces from antisemites and those who distort the truth. “This is what Israel is up against,” Schumer told representatives of the Jewish Democratic Council of...