Poway Mayor Steve Vaus and Pittsburgh Mayor Bill Peduto have seen firsthand the danger of an ancient hatred lying in wait. Amid a precipitous rise in hate incidents across the country, they want others to be mindful of the peril. Ahead of the Poway shooting’s second anniversary, nearly 600 American city leaders, Vaus and Peduto included, have signed the Mayors United Against Antisemitism statement, an initiative of the U.S. Conference of Mayors and the American Jewish Committee.