![A free Palestine banner with a red fist and the flag's colors](https://ca-times.brightspotcdn.com/dims4/default/8fe8756/2147483647/strip/true/crop/5905x3936+0+0/resize/2000x1333!/quality/75/?url=https%3A%2F%2Fcalifornia-times-brightspot.s3.amazonaws.com%2F12%2F07%2F8aee616c49f0ab19b56772bd41cc%2F1449302-me-0515-uci-protest-rcg-3347.jpg)
(Robert Gauthier / Los Angeles Times)
Scores of police officers converged on UC Irvine on Wednesday as a pro-Palestinian demonstration escalated, with protesters occupying and barricading the Physical Sciences Lecture Hall, which is near their encampment.
The escalation of the protest began about 2:30 p.m., according to a university spokesperson. School officials have sent out two alerts telling students to shelter in place. UCI said “a group of several hundred protesters” entered the building.
![Law enforcement personnel push back demonstrators at UCI.](https://ca-times.brightspotcdn.com/dims4/default/fa23612/2147483647/strip/true/crop/4252x2834+0+0/resize/2000x1333!/quality/75/?url=https%3A%2F%2Fcalifornia-times-brightspot.s3.amazonaws.com%2F84%2Fbc%2F961dad5a48139a2b710b2f628f65%2F1449302-me-0515-uci-protest-rcg-1074.jpg)
(Robert Gauthier/Los Angeles Times)
Law enforcement personnel push back demonstrators at UCI.
![Police grab a demonstrator as they move forward to break up a demonstration at UC Irvine.](https://ca-times.brightspotcdn.com/dims4/default/fad33a8/2147483647/strip/true/crop/5383x3588+0+0/resize/2000x1333!/quality/75/?url=https%3A%2F%2Fcalifornia-times-brightspot.s3.amazonaws.com%2Fe9%2Ffc%2Fc6b5183b47b7b8d2e9cf9c5495dc%2F1449302-me-0515-uci-protest-rcg-2908.jpg)
(Robert Gauthier/Los Angeles Times)
Police grab a demonstrator as they move forward to break up a demonstration at UCI.
![Police remove pallets as they continue to move out protesters from the plaza outside the UCI physical sciences building.](https://ca-times.brightspotcdn.com/dims4/default/dd45260/2147483647/strip/true/crop/5603x3647+0+0/resize/2000x1302!/quality/75/?url=https%3A%2F%2Fcalifornia-times-brightspot.s3.amazonaws.com%2F5e%2F8d%2F472a2dc34e9e9fb89eea930011e8%2F1449302-me-0515-uci-protest-rcg-778.jpg)
(Robert Gauthier/Los Angeles Times)
Police remove pallets as they continue to move out protesters from the plaza outside the UCI physical sciences building.
![A pro-Palestinian protester stands in front of a line of law enforcement officers from multiple agencies.](https://ca-times.brightspotcdn.com/dims4/default/16f3427/2147483647/strip/true/crop/6000x4000+0+0/resize/2000x1333!/quality/75/?url=https%3A%2F%2Fcalifornia-times-brightspot.s3.amazonaws.com%2Ff8%2F8f%2F2294238c4a68824686d73e12c1f6%2F1449258-me-uci-protest26-ajs.jpg)
(Allen J. Schaben/Los Angeles Times)
A pro-Palestinian protester stands in front of a line of law enforcement officers from multiple agencies.
![A UCI professor is arrested during a demonstration at UCI](https://ca-times.brightspotcdn.com/dims4/default/ee60364/2147483647/strip/true/crop/6000x4000+0+0/resize/2000x1333!/quality/75/?url=https%3A%2F%2Fcalifornia-times-brightspot.s3.amazonaws.com%2Ff2%2F0c%2F517277ab400fac0632ba0cb7eddf%2F1449258-me-uci-protest30-ajs.jpg)
(Allen J. Schaben/Los Angeles Times)
A UCI professor is arrested during a demonstration at UCI.
![A weeks-long pro-Palestine protest at UC Irvine.](https://ca-times.brightspotcdn.com/dims4/default/9e05ad6/2147483647/strip/true/crop/6000x4000+0+0/resize/2000x1333!/quality/75/?url=https%3A%2F%2Fcalifornia-times-brightspot.s3.amazonaws.com%2F12%2Fec%2Fd0a6c6b94a9481076e73a5e55c9c%2F1449258-me-uci-protest32-ajs.jpg)
(Allen J. Schaben/Los Angeles Times)
The weeks-long pro-Palestinian protest at UC Irvine.
![A pro-Palestinian demonstrator confront law enforcement at UCI.](https://ca-times.brightspotcdn.com/dims4/default/2a11185/2147483647/strip/true/crop/6000x4000+0+0/resize/2000x1333!/quality/75/?url=https%3A%2F%2Fcalifornia-times-brightspot.s3.amazonaws.com%2Fb2%2F6e%2Fe1054ac647a7a676857401ec1ea5%2F1449258-me-uci-protest28-ajs.jpg)
(Allen J. Schaben/Los Angeles Times)
A pro-Palestinian demonstrator confronts law enforcement at UCI.
![A pro-Palestinian demonstrator flashes a piece sign as a weeks-long pro-Palestine protest at UC Irvine.](https://ca-times.brightspotcdn.com/dims4/default/d702c2d/2147483647/strip/true/crop/6000x4000+0+0/resize/2000x1333!/quality/75/?url=https%3A%2F%2Fcalifornia-times-brightspot.s3.amazonaws.com%2F24%2F1d%2Fafd8c54449ab8f210a47dd739ca8%2F1449258-me-uci-protest31-ajs.jpg)
(Allen J. Schaben/Los Angeles Times)
A pro-Palestinian demonstrator flashes a peace sign.
![People flee the area after a weeks-long pro-Palestine protest at UC Irvine demanding](https://ca-times.brightspotcdn.com/dims4/default/54e8bf9/2147483647/strip/true/crop/6000x4000+0+0/resize/2000x1333!/quality/75/?url=https%3A%2F%2Fcalifornia-times-brightspot.s3.amazonaws.com%2Fbc%2F3a%2F5253bc144793927002e6889f5bd9%2F1449258-me-uci-protest01-ajs.jpg)
(Allen J. Schaben/Los Angeles Times)
People flee the area after a weeks-long pro-Palestine protest at UC Irvine.
![A protester is arrested at UC Irvine as police break up the encampment.](https://ca-times.brightspotcdn.com/dims4/default/373e9d6/2147483647/strip/true/crop/3603x2402+0+0/resize/2000x1333!/quality/75/?url=https%3A%2F%2Fcalifornia-times-brightspot.s3.amazonaws.com%2Fab%2Feb%2F91829d474f4a8948cbff9195c8f9%2F1449302-la-me-uc-irvine-protest-001-rg.jpg)
(Robert Gauthier/Los Angeles Times)
A protester is arrested as police break up the encampment.
![Pro-Palestinian protesters link arms to form a blockade to the Physical Sciences\](https://ca-times.brightspotcdn.com/dims4/default/aca58e1/2147483647/strip/true/crop/6000x4000+0+0/resize/2000x1333!/quality/75/?url=https%3A%2F%2Fcalifornia-times-brightspot.s3.amazonaws.com%2F5f%2Fb4%2Fd77096da4820acbe79e2b2cccbc4%2F1449258-me-uci-protest09-ajs.jpg)
(Allen J. Schaben/Los Angeles Times)
Pro-Palestinian protesters link arms to form a blockade.
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