Five days after police arrested 12 pro-Palestinian protesters at the University of New Hampshire, students and faculty called for the resignation of university Police Chief Paul Dean after they say he assaulted a student while responding to last week’s protest.

The calls came at a demonstration Monday afternoon at the flag post outside the university’s Thompson Hall attended by about 150 students, faculty and community members.

Those present, including professors, say Dean — dressed in plain clothes — charged at protesters and ripped a piece of white cloth from one last Wednesday evening.

Dean did not respond to requests for comment, though he previously told the Boston Globe that protesters were violent and that police were assaulted, and denied personally assaulting any students.

“I think an investigation, the information there will prove this to be wrong,” Dean told the Globe.

It was unclear whether any investigation has been launched or which entity would lead one.

“I’m not aware of any investigation,” university spokesperson Tania deLuzuriaga said Monday.

Siobhan Senior, a UNH women’s and gender studies professor, witnessed Wednesday’s interaction between Dean and protesters and described Dean as “triggered” by the sight of tents — a couple of which were in the process of being set up.

“He shoved two [protesters] just violently and grabbed one of the tents,” Senior said. “He was in there by himself.”

Both Senior and professor emeritus Joshua Meyrowitz have been at UNH for decades and described Dean’s response as out of character.

“Something was very weird that day,” Meyrowitz said. “It was like a bull charging red fabric.”

He is normally “a great diplomat,” Senior added.

A group of faculty set to meet on Monday afternoon were also calling on Dean to resign.

Later on Wednesday, after Dean’s skirmish with students, state and university police dressed in riot gear pushed and punched a group of protesters holding a sign, video shows.

“I think it is horrific to witness the administration call the police and ask them to engage in police brutality,” said Yussra Ebrahim, 30, a UNH alumnus and Portsmouth resident whose mother was arrested last week.

In response to a question about the police response and calls for Dean to resign, deLuzuriaga, described the protest on Monday as “impassioned, provocative and peaceful.”

“[I]t is my responsibility to ensure that all students are safe and have access to a full educational experience. We will not allow our campus to be co-opted by a small group of protesters, including those from outside the university community whose agenda is antithetical to student success and well-being,” UNH President James W. Dean Jr. wrote in a message to the community last week.

Monday’s protest was notably devoid of any police presence aside from a line of about four police cars that drove down Main Street midway through the event.

In addition to criticizing last week’s police response, protesters continued to call on the university to disclose its investments and divest from companies in Israel.

“Disclose, divest, we will not stop, we will not rest,” protesters chanted at one point.

Meanwhile, a group of about 10 counter-protesters — many of whom are members of the university’s College Republicans student group — waved large American flags and periodically launched into chants of “USA! USA!”

“If people were being violent and setting up an encampment, then it was the right call” to arrest them, junior Sara Mazzella said of last week’s response.

Protesters and counter-protesters engaged in some verbal back-and-forth but did not get violent with each other.