A University of Oklahoma professor confronted the school's president Tuesday and demanded that he resign after a video surfaced in which a now-former student wore blackface and used a racial slur. About 1,000 students and faculty members gathered at a campus rally during which administrators condemned the video showing a white woman with black paint on her face as another white woman laughs.

The school released public apologies from two former students who were involved in the video. But as students and university officials took their turn at the microphone, many said they need to see more from campus leadership.

Suzette Grillot, the former dean of OU's College of International Studies who was fired from her post last week, asked university President Jim Gallogly, who was sitting in the front row, to resign. "Enough is enough," said Grillot, who remains a tenured professor at OU. "No more racism. No more."

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She held up a sign that read "Resign now" and dropped it in Gallogly's lap, prompting cheers from many of the students at the rally. Gallogly said afterward that he had no plans to resign and was working to accomplish many of the goals outlined by OU's Black Student Association, including adding a zero-tolerance policy on hate speech to the student code of conduct and hiring more African-American faculty and staff.

During the rally, Gallogly asked for help from those in attendance. "I sat here in this chair and listened to people point at me, look at me, tell me things, and some of those things are my responsibility, and I have a duty to lead our university to a better place, and I am prepared to do that," he said, according to CBS affiliate KWTV. "I am here to do that. I ask for your help to do that."

Student Courtney Patterson echoed the calls from the OU Black Student Association and said he wants to see the administration do more to teach Gallogly's goals. "The university is trying to make the right decisions, but I think they need to include more students in the conversation moving forward," Patterson said, "because an apology is simply not going to be enough."

Before Tuesday's rally, Gallogly also met with Native American students, one of whom performed a cedar burning prayer and another who marked his face with Oklahoma red clay as part of an indigenous ritual of protection. "I really hope the administration takes on our voice and that they actually listen to us," said Lauren Noriega, a sophomore from Lawton and a member of the Comanche Nation.

The university said the written apologies, in which both women said they never intended to hurt anyone, were sent to the Office of University Community on Saturday, a day after the video surfaced. Gallogly announced Monday — noting it was Martin Luther King Jr. Day, which honors the slain black civil rights leader — that both women had voluntarily withdrawn from campus.

Frances Ford said in her statement that the video was "insensitive and irresponsible," adding: "I am truly heartbroken over this mistake and deeply regret any adverse reactions." Olivia Urban called the video "the most regrettable decision of my life."

"My heart hurts to see the traumatic impact my words and actions have had on those who have been hurt of my behalf," Urban said. "There is no excuse for this behavior, in private or in public."

The University of Oklahoma Tri Delta sorority chapter also said in a statement that it has removed one of the women from membership. The university severed ties with a fraternity in 2015 after several members took part in a chant caught on video that referenced lynching.

Gallogly said Monday that having a second incident just a few years later shows that "there must be something systemic" and that the campus has work to do.