An anti-Israel demonstration shut down Grand Central Terminal’s iconic main concourse to rush-hour travelers Thursday evening over security concerns before hundreds of angry protesters marched downtown. Several protesters were arrested in the demonstration, dubbed “Flood New York for Gaza,” which was organized by the Palestinian activist group Within in Our Lifetime. Protesters converged on Pershing Square outside of Grand Central Terminal around 5:30 p.m., where they briefly clashed with about 50 pro-Israel counter-protesters. The crowd quickly ballooned to hundreds strong — many of them masked — as they took to the streets and headed down Park Avenue, waving Palestinian flags...
