John J. Sloan III

(He/Him)
NYPD police officers march onto Columbia University’s campus in New York City on April 30, 2024. Kena Betancur/AFP via Getty Images

Why universities turn to the police to end student protests − and why that can spiral out of control

While most colleges and universities have their own police units, some schools, like Columbia University, have only private security − and then can call in outside police when they feel it is needed.

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