What started as a gap year in Israel for Long Island native Omer Neutra has turned into the cruelest of circumstances — being held hostage by the terrorists who plunged the region into chaos. “His values were peace and love and support,” Omer’s father Ronen Neutra said Tuesday, 17 days after the terrorist group Hamas attacked Israel and kidnapped scores of hostages. “We need our son back. Bring our kids back.” He made his impassioned plea at the United Nations in Midtown, where families of kidnapped loved ones appealed to world leaders for help securing their release. Israeli officials estimate...