The university said campus police, supported by city police, removed the demonstrators Friday night, arresting 19 people, including six University of Pennsylvania students.
Drexel University site of new encampment by Pro-Palestinian protesters
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Jonathan Zimmerman, a professor of the history of education at the private University of Pennsylvania, said college leaders are trying to balance free speech with the right of families to celebrate graduation.
Pro-Palestinian encampments threaten college graduations
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