LINSEY DAVIS: As we come on the air, New York authorities are issuing a warning ahead of Passover. Officials say the holiday, which begins tomorrow, may serve as a catalyst for extremist groups and individuals to commit acts of violence against Jewish faith-based communities. This comes as tensions are rising at Columbia University here in New York over the Israel-Hamas war. More than 100 people have been arrested in recent days. A rabbi at the school confirms to ABC News that he strongly recommended to Jewish students that they go home and not return to campus because of what he calls extreme anti-semitism at the school. A New York congresswoman is calling for the university's president to resign. And tonight, The White House is condemning calls for violence against Jewish students.