Protests erupt after student arrests in US immigration sweep
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US Secretary of State Marco Rubio says more than 300 foreign student visas may have been revoked under the Trump Administration's immigration crackdown. But the tactics used by the State Department have come under fire after the street arrest of a 30-year-old PhD student it claims was a Hamas supporter. Protesters say there's no evidence of that, describing her arrest and visa cancellation as an attack on free speech.