Police arrest over 40 as they clear pro-palestinian protest camps at Penn, MIT and Arizona

Police made more than 40 arrests as pro-palestinian protest encampments were dismantled Friday at the University of Pennsylvania and the Massachusetts Institute of Technology, hours after police tear-gassed demonstrators and took down a similar camp at the University of Arizona.

The dismantling at Penn came around 5:30 a.m., as campus and Philadelphia police moved in to remove protesters from an encampment that had been in place for more than two weeks. School officials said protesters were given warnings and the chance to leave without being detained. About 33 people, including students and faculty members, were among those arrested and charged with defiant trespass, the school said.

In Cambridge, Massachusetts, police in riot gear arrived at MIT around 4 a.m., encircled the camp and gave protesters about 15 minutes to leave. Ten students who remained were arrested, the university's president said. A crowd outside the camp began gathering and chanting pro-palestinian slogans but were dispersed by 6 a.m.

At the University of Arizona in Tucson, campus police in riot gear fired tear gas late Thursday at protesters before tearing down an encampment that included wood and plastic barriers on campus. A university spokesperson said two people were arrested.

The university said in a statement that the encampment violated school policy.

"A structure made from wooden pallets and other debris was erected on campus property after 5 p.m. in violation of the policy," the school said in a statement. "University officials issued warnings to remove the encampment and disperse. The warnings were ignored."

The school also said that police vehicles were spiked, and that rocks and water bottles were thrown at officers and university staff.

Tensions have ratcheted up in standoffs with protesters on campuses across the United States and in Europe. Some colleges cracked down immediately, while others have tolerated the demonstrations. Some have begun to lose patience and call in the police over concerns about disruptions to campus life and safety.

The protest movement began nearly three weeks ago at Columbia University in New York City. It has

since swept college campuses nationwide, with demonstrators generally seeking to draw attention to the deaths from the Israelhamas war or calling for their schools to stop doing business with Israel or companies that support its

war efforts.

The Associated Press has recorded at least 73 instances since April 18 in which arrests were made at U.S. campus protests. More than 2,800 people have been arrested at 56 colleges and universities. The figures are based on AP reporting and statements from schools and law enforcement agencies.