DAVIS (CBS13/AP) — The UC Davis chancellor defended herself Tuesday from criticism over the campus police force’s pepper spraying of peaceful demonstrators as information emerged about the officer at the heart of the incident.

Video footage of Lt. John Pike and another officer clad in riot gear casually spraying an orange cloud at the heads of protesters who were sitting peacefully on the ground has sparked national outrage since it began circulating online Friday night. Students gathered on campus Tuesday for the second time in as many days to condemn the violence and urged university officials to require police to attend sensitivity training.

UC Davis Chancellor Linda Katehi, who has faced harsh criticism from students over Friday’s incident, defended herself during a town hall meeting Tuesday night. She told an auditorium filled with a little more than 1,000 students that she asked police to remove tents from the university’s quad but did not direct them to forcibly remove the demonstrators.

“I explicitly directed the chief of police that violence should be avoided at all costs,” she said. “It was the absolute last thing I ever wanted to happen.”

She stressed that students have a right to demonstrate peacefully.

“Because encampments have long been prohibited by UC policy, I directed police only to take down the tents,” she said. “My instructions were for no arrests and no police force.”

But one student questioned that during the meeting.

“I just want to know, when is it ever going to be the right time to protest?” she asked.

After the town hall, Katehi told CBS13 she thought it was a “wonderful meeting” and the start of the healing process.

“We try to heal as a community, and we will go trough various phases,” she said. “We were all very upset in the early days.”

She again reiterated that she has no plans to resign but instead wants to be part of the recovery process.

“I would say this will define the university, and that’s what people will remember,” she said.

Pike, another officer and the campus police chief have been placed on paid administrative leave in the wake of an incident that has generated international attention for the 32,000-student campus just west of the state capital, the third most populous in the UC system behind the campuses in Los Angeles and Berkeley.

Not all students who attended the town hall in a performing arts complex were satisfied with the response from Katehi, who attended a rally on campus Monday and apologized to students. Puneet Kamal, 22, an environmental science and policy major, was among those lined up to ask questions Tuesday.

“She didn’t say ‘I’m sorry that I did this, or I’m sorry I made this call,’” Kamal said. “She said ‘I’m sorry that this situation had to happen.’ Where’s the blame going to?”

Natalie Poulton, 20, a communications major, said Katehi has not fully explained what she knew in advance about the police plans for clearing out protesters.

“I want more answers,” said Poulton. “She totally didn’t explain if there was a miscommunication with the cops and what exactly happened in terms of the higher-ups.”

Pike, one of the officers who sprayed the students, is a retired Marine sergeant who has been honored for his police work on campus, but he also figured in a discrimination lawsuit against the university.

He has risen swiftly through the ranks of the UC Davis police force over the last decade. As one of four lieutenants, the 39-year-old supervises more than one-third of the sworn officers, including the investigations unit.

He has twice been honored by the university for exceptional police work, including a 2006 incident in which he tackled a scissor-wielding hospital patient who was threatening fellow officers. Afterward, he said he decided against using pepper spray because it might harm his colleagues or other hospital patients.

But an alleged anti-gay slur by Pike also figured in a racial and sexual discrimination lawsuit a former police officer filed against the department, which ended in a $240,000 settlement in 2008. Officer Calvin Chang’s 2003 discrimination complaint against the university’s police chief and the UC Board of Regents alleged he was systematically marginalized as the result of anti-gay and racist attitudes on the force, and he specifically claimed Pike described him using a profane anti-gay epithet.

Over the weekend, the hacker group Anonymous, which is affiliated with the Occupy Wall Street movement, posted on its website Pike’s phone number and other personal details.

Pike did not immediately return a message left Tuesday at a home address listed in Roseville. It was not immediately known whether he had hired an attorney.

Dieter Dammeier, an Upland lawyer for the Federated University Police Officers Association, the union that represents UC Davis officers, said the operations plan issued by the department includes the use of pepper spray. Dammeier said he does not represent Pike because he is a manager.

“The officers were doing simply what they were instructed to do by upper management there,” Dammeier said, referring to police, not university, management. “So the officers are getting beat up pretty good out there, but they were simply doing what they were instructed to do.”

The administrator who oversees campus policing said the force has wide discretion in deciding how to respond to specific circumstances.

Given the sometimes violent events associated with Occupy demonstrations in downtown Oakland and UC Berkeley, UC Davis administrators did not want tents and encampments to take hold on campus because it would likely draw people who were not students, said John Meyer, vice chancellor for administrative and resource management.

He said a decision was made to allow the police to clear the tents.

“We didn’t think it was going to end as it ended,” Meyer said. “Once these actions begin however, there is great discretion for officers to make decisions in the field.”

Records show Pike joined the Marines in November 1989, and by the time he left, he had been promoted to sergeant.

In 2003, two years after Pike joined the campus police force, he received his first meritorious service award for using his patrol car to bump a suspect’s vehicle onto a local highway ramp, stopping the man from driving the wrong way.

Four years later, the university’s press office issued a release about accolades Pike received after subduing a UC Davis Medical Center patient who was threatening a fellow officer with scissors and a spray bottle filled a caustic chemical.

Pike saw the scissors-wielding patient try to assault an officer and landed “a body block, powering his left shoulder” into her, the release said.

But in that situation, the 245-pound Pike opted not to use pepper spray, because he didn’t want to hurt his fellow officers, Pike said.

“You’ve got all these tools on your belt but sometimes they’re not the best tools,” Pike said.

Tuesday, state lawmakers announced they would hold a hearing on the pepper-spraying incident. Assembly Speaker John Perez sent a letter to the University of California Board of Regents chairwoman Sherry Lansing and UC President Mark Yudof asking for a system-wide investigation.

“Students, parents and the public deserve to have answers to the myriad of troubling questions these incidents have raised,” Perez, D-Los Angeles, said in a statement.

Yudof later announced he had appointed former Los Angeles Police Chief William Bratton to review the UC Davis incident and provide “an independent, unvarnished report about what happened.”

He also appointed the university’s general counsel and the UC Berkeley law school dean to examine police protocols and policies at all 10 UC campuses, including discussions with students, faculty and staff.

Student government leaders on campus condemned the use of pepper spray on student protesters and called for Katehi to resign if she fails to enact reforms.

“Major reforms are needed because regardless of whoever is fired or resigns, it won’t mean anything if we don’t change policy and the way our institutions are run,” Adam Thongsavat, president of the Associated Students of the University of California, Davis, said in an interview. “That’s what’s going to affect students and campus policy and bring awareness.”

The student government passed a resolution Monday night calling on the state attorney general’s office to investigate campus police misconduct. The students are demanding police go through sensitivity training, seek more student representation and review policies on student protests.

Katehi has already asked the Yolo County district attorney’s office to investigate, and Chief Deputy District Attorney Jonathan Raven confirmed Tuesday that the department will look into the matter.

“I understand the frustration and anger students are feeling right now,” she said. “Our economy is in poor shape, employment prospects are the worst in decades and tuition has been increased a number of times.”