Law enforcement officers deployed to the University of California, Irvine (UC Irvine) take position, after protesters against the war in Gaza surrounded the physical sciences lecture hall, as the conflict between Israel and the Palestinian Islamist group Hamas continues, in Irvine, California, U.S. May 15, 2024. REUTERS/Mike Blake

Law enforcement officers deployed to the University of California, Irvine (UC Irvine) and demonstrators face off, after protesters against the war in Gaza surrounded the physical sciences lecture hall, as the conflict between Israel and the Palestinian Islamist group Hamas continues, in Irvine, California, U.S. May 15, 2024. REUTERS/Mike Blake

Demonstrators react as law enforcement officers deployed to the University of California, Irvine (UC Irvine) prepare to move into the crowd, after protesters against the war in Gaza surrounded the physical sciences lecture hall, as the conflict between Israel and the Palestinian Islamist group Hamas continues, in Irvine, California, U.S. May 15, 2024. REUTERS/Mike Blake

Demonstrators react as law enforcement officers deployed to the University of California, Irvine (UC Irvine) move into the crowd, after protesters against the war in Gaza surrounded the physical sciences lecture hall, as the conflict between Israel and the Palestinian Islamist group Hamas continues, in Irvine, California, U.S. May 15, 2024. REUTERS/Mike Blake

A demonstrator gives flowers to the law enforcement officers deployed to the University of California, Irvine (UC Irvine) after protesters against the war in Gaza surrounded the physical sciences lecture hall, as the conflict between Israel and the Palestinian Islamist group Hamas continues, in Irvine, California, U.S. May 15, 2024. REUTERS/Mike Blake

A law enforcement officer deployed to the University of California, Irvine (UC Irvine) speaks to a demonstrator, after protesters against the war in Gaza surrounded the physical sciences lecture hall, as the conflict between Israel and the Palestinian Islamist group Hamas continues, in Irvine, California, U.S. May 15, 2024. REUTERS/Mike Blake

Demonstrators gather as law enforcement officers deployed to the University of California, Irvine (UC Irvine) take position, after protesters against the war in Gaza surrounded the physical sciences lecture hall, as the conflict between Israel and the Palestinian Islamist group Hamas continues, in Irvine, California, U.S. May 15, 2024. REUTERS/Mike Blake

Law enforcement officers deployed to the University of California, Irvine (UC Irvine) take position next to the encampment, after protesters against the war in Gaza surrounded the physical sciences lecture hall, as the conflict between Israel and the Palestinian Islamist group Hamas continues, in Irvine, California, U.S. May 15, 2024. REUTERS/Mike Blake

Demonstrators react as law enforcement officers deployed to the University of California, Irvine (UC Irvine) move into the crowd, after protesters against the war in Gaza surrounded the physical sciences lecture hall, as the conflict between Israel and the Palestinian Islamist group Hamas continues, in Irvine, California, U.S. May 15, 2024. REUTERS/Mike Blake

Law enforcement officers deployed to the University of California, Irvine (UC Irvine) work to lock down the quad campus area, after protesters against the war in Gaza surrounded the physical sciences lecture hall, as the conflict between Israel and the Palestinian Islamist group Hamas continues, in Irvine, California, U.S. May 15, 2024. REUTERS/Mike Blake

Law enforcement officers deployed to the University of California, Irvine (UC Irvine) and demonstrators face off, after protesters against the war in Gaza surrounded the physical sciences lecture hall, as the conflict between Israel and the Palestinian Islamist group Hamas continues, in Irvine, California, U.S. May 15, 2024. REUTERS/Mike Blake

Demonstrators react as law enforcement officers deployed to the University of California, Irvine (UC Irvine) move into the crowd, after protesters against the war in Gaza surrounded the physical sciences lecture hall, as the conflict between Israel and the Palestinian Islamist group Hamas continues, in Irvine, California, U.S. May 15, 2024. REUTERS/Mike Blake

Law enforcement officers deployed to the University of California, Irvine (UC Irvine) and demonstrators face off, after protesters against the war in Gaza surrounded the physical sciences lecture hall, as the conflict between Israel and the Palestinian Islamist group Hamas continues, in Irvine, California, U.S. May 15, 2024. REUTERS/Mike Blake

Law enforcement officers deployed to the University of California, Irvine (UC Irvine) approach the encampment, after protesters against the war in Gaza surrounded the physical sciences lecture hall, as the conflict between Israel and the Palestinian Islamist group Hamas continues, in Irvine, California, U.S. May 15, 2024. REUTERS/Mike Blake

Law enforcement officers deployed to the University of California, Irvine (UC Irvine) detain demonstrators, after protesters against the war in Gaza surrounded the physical sciences lecture hall, as the conflict between Israel and the Palestinian Islamist group Hamas continues, in Irvine, California, U.S. May 15, 2024. REUTERS/Mike Blake

Law enforcement officers deployed to the University of California, Irvine (UC Irvine) move into the crowd, after protesters against the war in Gaza surrounded the physical sciences lecture hall, as the conflict between Israel and the Palestinian Islamist group Hamas continues, in Irvine, California, U.S. May 15, 2024. REUTERS/Mike Blake

Demonstrators react as law enforcement officers deployed to the University of California, Irvine (UC Irvine) prepare to move into the crowd, after protesters against the war in Gaza surrounded the physical sciences lecture hall, as the conflict between Israel and the Palestinian Islamist group Hamas continues, in Irvine, California, U.S. May 15, 2024. REUTERS/Mike Blake

Demonstrators react as law enforcement officers deployed to the University of California, Irvine (UC Irvine) prepare to move into the crowd, after protesters against the war in Gaza surrounded the physical sciences lecture hall, as the conflict between Israel and the Palestinian Islamist group Hamas continues, in Irvine, California, U.S. May 15, 2024. REUTERS/Mike Blake

Demonstrators react as law enforcement officers deployed to the University of California, Irvine (UC Irvine) move into the crowd, after protesters against the war in Gaza surrounded the physical sciences lecture hall, as the conflict between Israel and the Palestinian Islamist group Hamas continues, in Irvine, California, U.S. May 15, 2024. REUTERS/Mike Blake

Demonstrators react as law enforcement officers deployed to the University of California, Irvine (UC Irvine) prepare to move into the crowd, after protesters against the war in Gaza surrounded the physical sciences lecture hall, as the conflict between Israel and the Palestinian Islamist group Hamas continues, in Irvine, California, U.S. May 15, 2024. REUTERS/Mike Blake

A demonstrator gives a flower to the law enforcement officers deployed to the University of California, Irvine (UC Irvine) after protesters against the war in Gaza surrounded the physical sciences lecture hall, as the conflict between Israel and the Palestinian Islamist group Hamas continues, in Irvine, California, U.S. May 15, 2024. REUTERS/Mike Blake