In videos of the incidents, the usher grabbed onto students, sometimes by the collar and some in an embrace with both arms, before swinging them around to the rest of the walkway.
According to TIME, the students said they were "strolling" after getting their degrees, something they say is a tradition among black fraternities.
The university's president has apologized for the situation.
Backlash online forced UF to issue an apology, which president W. Kent Fuchs delivered at another commencement ceremony that weekend.
"I want to personally apologize for us doing that on behalf of myself and also the University of Florida", Fuchs said. I want our students to know-I want you all, our students, to know-that we have changed that practice and we also want every one of you to know that we celebrate you, your graduations and your accomplishments.
Oliver Telusma was one of the graduates who has since opened up about his experience being mistreated.
"I had just started, and he picked me up and turned me around, which I thought was kind of embarrassing and degrading to be handled in that manner", 21-year-old Telusma, a member of the Beta Sigma chapter of Alpha Phi Alpha fraternity, told the Gainesville Sun. The videos have caused immediate uproar, since it appears that the unnamed faculty member was only being rough with black graduates. "As an alumni and am completely disgraced at the treatment of this students who earned their spot on that stage".
The university also released a statement on Twitter, saying it was proud of all graduates.? One man wrote on Twitter, "Somebody please find out this employee's name!"
"It was definitely contingent on your race... other white students who were dancing were not perceived as a threat", Attah said.
He later addressed the incident in a video posted to Twitter. Watch it for yourself. But no one gives af apparently.