Demonstrators gather outside of Columbia University to demand a ceasefire and the end of Israeli attacks on Gaza, during the ongoing conflict between Israel and the Palestinian Islamist group Hamas, during a protest in New York. Adam Gray | Reuters A growing number of leaders and organizations have called on Columbia University and its president to protect students amid reports of antisemitic and offensive statements and actions on and near its campus, which has been the site this week of a pro-Palestinian encampment and protest. The protest and encampment on campus has drawn attention to the right of free speech...