A UC-Berkeley student said on "Fox & Friends" Friday he's disappointed in the school's response to a physical attack against a conservative activist on the campus. 

Cell phone video allegedly shows an unidentified man assaulting Hayden Williams, including punching him in the face, while accusing him of racism. 

In an interview on "Hannity," Williams said some students took offense to a sign displayed by Turning Point USA that read, "Hate Crime Hoaxes Hurt Real Victims." The sign referred to the hoax involving 'Empire" actor Jussie Smollett, who falsely claimed he was beaten up by Trump supporters in Chicago.

"This person claimed we were promoting violence on campus and proceeded to take his aggression out on us,” Williams said. 

The attack left Williams with a black eye. 

The student who recorded the assault, Alexander Szarka, said the university's response to the incident was "weak." Brian Kilmeade expressed disbelief that the suspect had not been arrested in the more than two days since the attack.

The school's chancellor's, Carol Christ, issued a statement that the university "condemns violence and harassment of any sort" but explained that the attacker is not "affiliated" with the university. Christ urged anyone with information on the perpetrator to contact police.

Warning: the following video contains violence and profanity.