Alan Dershowitz said Wednesday that Jewish students harassed by anti-Israel protesters should consider filing lawsuits if left-wing prosecutors refuse to file charges. Dershowitz’s comments came after Columbia University suggested that professors either cancel final exams or consider administering them online following the police removal of protesters who occupied Hamilton Hall on the Ivy League school’s campus. On his podcast, “The Dershow,” Dershowitz expressed doubt that Manhattan District Attorney Alvin Bragg would act against the protesters, and that Jewish students should consider filing…