LOS ANGELES (AP) — Police have arrested more than 2,000 people during pro-Palestinian protests at college campuses across the United States in recent weeks, according to an Associated Press tally Thursday.

Demonstrations — and arrests — have occurred in almost every corner of the nation. But in the last 24 hours, they’ve drawn the most attention at the University of California, Los Angeles, where chaotic scenes played out early Thursday when officers in riot gear surged against a crowd of demonstrators.

Hundreds of protesters at UCLA defied orders to leave, some forming human chains as police fired flash-bangs to break up the crowds.

At least 200 people were arrested, said Sgt. Alejandro Rubio of the California Highway Patrol, citing data from the Los Angeles County Sheriff’s Department. Rubio said they were being booked at the county jails complex near downtown Los Angeles. UCLA police will determine what charges to bring.

Later Thursday morning, workers removed the barricades and dismantled the protesters’ fortified encampment. Bulldozers scooped up bags of trash and tents. Some buildings were covered in graffiti.

Tent encampments of protesters calling on universities to stop doing business with Israel or companies they say support the war in Gaza have spread across campuses nationwide in a student movement unlike any other this century.

The demonstrations began at Columbia University on April 17, with students calling for an end to the Israel-Hamas war, which has killed more than 34,000 Palestinians in the Gaza Strip, according to the Health Ministry there. Israel launched its offensive in Gaza after Hamas militants killed about 1,200 people, mostly civilians, and took roughly 250 hostages in an attack on southern Israel on Oct. 7.

California Highway Patrol officers poured into the UCLA campus by the hundreds early Thursday. Wearing face shields and protective vests, they held their batons out to separate them from demonstrators, who wore helmets and gas masks and chanted: “You want peace. We want justice.”

For hours, officers warned over loud speakers that there would be arrests if the crowd of more than 1,000 people did not disperse. Protesters and police shoved and scuffled as officers encountered resistance. With police helicopters hovering, the sound of flash-bangs pierced the air. Police pulled off protesters’ helmets and goggles as they made arrests.

Police methodically ripped apart the encampment’s barricade of plywood, pallets, metal fences and dumpsters, then pulled down dozens of canopies and tents. The number of protesters diminished through the morning, some leaving voluntarily with their hands up and others detained by police.

The law enforcement presence and continued warnings contrasted with the scene Tuesday night, when counterdemonstrators attacked the pro-Palestinian encampment, throwing traffic cones, releasing pepper spray and tearing down barriers. Fighting between the two sides continued for hours before police stepped in. No one was arrested, but at least 15 protesters were injured. Authorities’ tepid response drew criticism from political leaders, Muslim students and advocacy groups.

By Wednesday afternoon, a small city sprang up inside the reenforced encampment, with hundreds of people and tents on the quad. Demonstrators rebuilt the makeshift barriers around their tents while state and campus police watched.

Some protesters said Muslim prayers as the sun set, while others chanted “we’re not leaving” or passed out goggles and surgical masks. They wore helmets and headscarves, and discussed the best ways to handle pepper spray or tear gas as someone sang over a megaphone.

The crowd grew as the night wore on and as more officers poured onto campus.

Ray Wiliani, who lives nearby, said he went to UCLA on Wednesday evening to support the pro-Palestinian demonstrators.

“We need to take a stand for it,” he said. “Enough is enough.”

California Gov. Gavin Newsom denounced the delayed law enforcement response on Tuesday and UCLA Chancellor Gene Block promised an investigation. The head of the University of California system, Michael Drake, ordered an “independent review of the university’s planning, its actions and the response by law enforcement.”

“The community needs to feel the police are protecting them, not enabling others to harm them,” Rebecca Husaini, chief of staff for the Muslim Public Affairs Council, said during a news conference Wednesday.

Iranian state television carried live images of the police action at UCLA, as did Qatar’s pan-Arab Al Jazeera satellite network. Live images of Los Angeles also played across Israeli television networks.

Israel has branded the protests antisemitic, while Israel’s critics say it uses those allegations to silence opposition. Although some protesters have been caught on camera making antisemitic remarks or violent threats, protest organizers — some of whom are Jewish — call it a peaceful movement to defend Palestinian rights and protest the war.

President Joe Biden on Thursday defended the students’ right to peaceful protest but decried the disorder of recent days.

On Thursday, California Republican leaders blasted university administrations for failing to protect Jewish students and allowing protests to escalate into “lawlessness and violence.”

They’re calling for the firing of leaders at universities such as UCLA and Cal Poly Humboldt and are pushing for a proposal that would cut pay for university administrators.

“We’ve got a whole lot of people in these universities drawing six figure salaries and they stood by and did nothing,” Assembly Republican Leader James Gallagher told reporters. “There does need to be accountability.”

Meanwhile, protest encampments at schools across the U.S., were cleared by police — resulting in more arrests — or closed up voluntarily. In New York, those included the City College of New York, Fordham University, Stony Brook University and the University of Buffalo. Others nationwide included the University of New Hampshire in Durham, Northern Arizona University in Flagstaff, and Tulane University in New Orleans.

A college professor from Illinois said he suffered multiple broken ribs and a broken hand during a pro-Palestine protest on Saturday at Washington University in St. Louis, Missouri.

Bystander video shows the arrest of Steve Tamari, a history professor at Southern Illinois University Edwardsville. He seems to be moving in to take video or photos of protesters being detained when multiple officers roughly take him down.

Tamari said in a statement Thursday that it was “a small price to pay for Israel’s ongoing genocide in Gaza.” Campus police referred questions to the university’s communications department, which did not respond to a request for comment.

Upcoming graduations have become a concern.

Florida’s state university chancellor ordered campus presidents to take whatever steps necessary to prevent disruption of ceremonies. At the same time, University of Minnesota officials reached agreement with protesters not to disrupt commencements. Similar agreements have been made at Northwestern University in suburban Chicago and Brown University in Rhode Island.

Meanwhile, a professors group at Columbia University condemned school leadership on Thursday for asking police to remove protesters in what the group called a “horrific police attack on our students.” Officers burst into a building Tuesday, breaking up a demonstration that had paralyzed the school.

U.S. college campuses have become a flashpoint, with school leaders facing intense scrutiny over their handling of allegations of antisemitism and the right to free speech. The presidents of Harvard and the University of Pennsylvania resigned following questions at a congressional hearing about whether calls on campus for the genocide of Jews would violate the school’s conduct policy.

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Offenhartz and Frederick reported from New York. Associated Press journalists around the country contributed to this report, including Julie Watson, Krysta Fauria, John Antczak, Christopher L. Keller, Lisa Baumann, Stefanie Dazio, Jae C. Hong, Colleen Long, Karen Matthews, Sarah Brumfield, Carolyn Thompson, Philip Marcelo, Steve Karnowski and Eugene Johnson.

Law enforcement is dismantling a pro-Palestinian encampment Thursday morning that has been set up in Dickson Plaza on the University of California, Los Angeles campus for about a week now.

The encampment was declared an unlawful assembly after several violent skirmishes broke out over the past few days between pro-Palestine demonstrators and pro-Israeli counterprotesters.

Dispersal orders were given to those in the encampment around 6 p.m. Wednesday but most refused to leave.

Officers from multiple agencies, including the Los Angeles Police Department and California Highway Patrol, were sent in to dismantle the encampment but were outnumbered and decided to call for reinforcements and wait until the morning hours to move in.

Several flash-bang noises could be heard as officers began tearing down the structure’s metal and wood barriers around 3 a.m. although it was unclear which side they were coming from.

Video showed several demonstrators being detained and walked out of the encampment.

Once the barricade was removed there was a standoff between more than 300 officers and defiant protesters who remained locked in arms and at the encampment.

Law enforcement could be heard warning the protesters to leave the area.

Around 4:30 a.m. dozens of officers swarmed through the middle of the encampment prompting a few of the protesters to flee.

Thursday’s events come after a week of inaction by UCLA administration that allowed the encampment to be set up on campus in violation of school policies.

A counter-protest was eventually set up by pro-Israeli supporters and several skirmishes between the two groups resulted over the next few days.

The most violent confrontation occurred Tuesday night when about 100 people wearing masks and dark clothing tried to breach the encampment.

Images showed several bloodied participants on both sides, leading to outrage from city officials and parents of students at the school.

The disruption caused classes to be canceled at the school on Wednesday.

Check back for updates on this developing story.

Police are searching for a group of suspects wanted for organized retail theft at an Orange County shopping mall.

The four suspects allegedly targeted a Champs Sports store at the Irvine Spectrum, according to the Irvine Police Department.

They allegedly stole Nike products from the retailer before fleeing the shopping center in two vehicles — a gray Mitsubishi Outlander SUV and a black Volkswagen Passat sedan.

Surveillance cameras captured the suspects’ images — believed to be two men and two women.

No further details were released on the theft as the group remains at large.

Anyone who recognizes the suspects or has additional information on the case is asked to email njohnson@cityofirvine.org.