Tens of thousands of demonstrators gathered in Washington on Tuesday for a “March for Israel” to show solidarity with Israel in its war with Hamas and condemn rising antisemitism. Streets were closed around much of downtown amid heightened security, as people gathered in bright sunshine on the National Mall, many draped in Israeli and U.S. flags. “We are here to show the world that we won’t be exterminated again,” said Marco Abbou, 57, a personal trainer from Hackensack, New Jersey, who is originally from Israel. Protests and public demonstrations — both pro-Palestinian and pro-Israel — have rippled around the world...