New York University’s Israeli alumni severed ties with the institution Tuesday over its failure to tackle antisemitism — and after its president allegedly played down the incendiary “from the river to the sea, Palestine will be free” chant as “not that bad.” The 2,000-strong NYU Alumni Club of Israel slammed NYU president Linda Mills and told board of trustees chairman Evan Chesler that it would drop ties until the institution tackled antisemitism head-on. The group wrote to Mills and Chesler after a series of on-campus incidents, including a junior admitting to tearing down posters of Hamas kidnapping victims and a...