Protesters have clashed at pro-Palestinian encampments in Los Angeles, hours after police cleared a similar protest in New York.
At the University of California, Los Angeles (UCLA), vice-chancellor Mary Osako said, "horrific acts of violence occurred at the encampment tonight".
At Columbia University in New York, police arrested protesters nearly 24 hours after they took over an academic building.
US universities have been gripped by protests as students demanded a boycott of companies and individuals with ties to Israel.
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