The arrests of Mahmoud Khalil and Rumeysa Ozturk are part of a shameful history

On Wednesday, masked plainclothes immigration officers arrested Rumeysa Ozturk, a Turkish citizen on a student visa, outside Tufts University, where she’s studying for a PhD. Video of her arrest, showing her being taken while walking down a street, has gone viral. Ozturk is now being held in a…