More than 100 people were arrested and four police officers were injured early Thursday when Boston police moved to clear a pro-Palestinian encampment at Emerson College. It is one of several set up by students at Massachusetts colleges including Massachusetts Institute of Technology and Harvard University.

Three of the officers suffered minor injuries and a fourth officer suffered more serious injuries, according to Boston police.

None of the protesters in custody have reported injuries, according to police. The protesters will be arraigned at Boston Municipal Court.

Police arrested 93 people on and around the University of Southern California campus, mostly on misdemeanor trespass Wednesday night.

The university declared the campus closed in the afternoon, open only to students with their USC IDs at pedestrian gates, due to what USC said "significant activity at the center of campus."

On Wednesday night, LAPD Captain Kelly Muniz told ABC News that around 35 protesters had been processed for misdemeanor trespass. Several dozen more were waiting to be processed, Muniz said.

There was an altercation in one portion of the protest area that resulted in one arrest for assault with a deadly weapon, according to Muniz.

There are no known injuries to police or protesters.

The scene will be cleared some time tonight., Muniz said.

-ABC News' Marilyn Heck

At least 34 people had been arrested at the University of Texas at Austin as of 9 p.m. local time, according to the Texas Department of Safety.

"Today, our University held firm, enforcing our rules while protecting the Constitutional right to free speech. Peaceful protests within our rules are acceptable," University President Jay Hartzell said in a statement Wednesday evening.

"Breaking our rules and policies and disrupting others’ ability to learn are not allowed. The group that led this protest stated it was going to violate Institutional Rules. Our rules matter, and they will be enforced. Our University will not be occupied."

"There is a way to exercise freedom of speech and civil discourse, and our Office of the Dean of Students has continued to offer ways to ensure protests can happen within the rules," Hartzell continued.

The dispersal order ended shortly after 9 p.m. and the campus was deemed "all clear," Austin Police said on X.

Campus police have issued a dispersal order at the University of Southern California amid ongoing protests over the Israel-Hamas war.

LAPD officers have surrounded Alumni Park on campus, and while much of the crowd has dispersed, an estimated group of 50 protesters remain in the park.

In an update shared on X Wednesday evening, the university’s Department of Public Safety said, "If you are in the center of campus, please leave; LAPD will be arresting people who don’t disperse."

New York University students set up a new pro-Palestinian encampment Friday, after over 130 students and faculty were arrested at an encampment earlier this week.

The protesters are calling on the university to divest and cut ties with Israel and companies profit from its onslaught on Gaza — including shutting down the NYU Tel Aviv campus and a boycott of Tel Aviv University. They are also calling for full amnesty for pro-Palestinian activism and for IOF-trained cops to leave campus.

"Despite the violent repression students have face, we will not back down. We have no reason to fear when Palestinians demonstrate their courage and resiliency in the face of far greater danger. Our fear has turned into resolve," the NYU Palestine Solidarity Coalition said in a statement Saturday.

Protesters say they were removed and arrests were made at a "100% peaceful" protest earlier this week, refuting the university's allegation that there was "antagonizing behavior" and a security breach caused it to invite New York police onto campus and make arrests, a representative for the NYU PSC told ABC News.

Protesters say they calmly entered the encampment after the university did not follow through on providing a timeline of when they would allow more students into the plaza, according to the student who was at the protest outside the encampment, but was not arrested.

Police started making arrests Monday after Muslim protesters began Maghreb prayer -- a daily Muslim prayer made during the sunset hour -- according to the student.

"Our peaceful protest was met with complete and utter violence green lighted by our university president and her administration," the student, who asked that ABC News conceal their identity for safety, said.

The university pushed back against the protester's account, saying "there is no right to create encampments of tents on the University's property."

"Despite repeatedly being told no additional protesters would be permitted on the plaza - early on Monday afternoon protesters on West 4th Street breached the barricades we had set up, nearly doubling the number of people on the plaza, with hundreds of additional demonstrators in the street," NYU said in a statement to ABC News.

"Those on the plaza urged them onwards and that Campus Safety Officers were shoved and forced out of the way by people attempting to gain entry to the plaza," NYU said.

-ABC News' Nadine El-Bawab