Columbia University's Israeli lecturer, Prof. Shai Davidi, has been temporarily barred from entering the university's premises after being accused of harassment. Prof. Davidi claims he is being discriminated against due to his opposition to anti-Israeli protests on campus. The university states that he repeatedly harassed and intimidated employees, leading to the decision. Prof. Davidi asserts that he is a victim of persecution and incitement and accuses the university of trying to silence him. His accusations of selective enforcement have sparked public controversy.