Police make an arrest. There is nothing brutal about this; police (apparently) handled it appropriately.
New York Times:
Cincinnati’s Bearcat mascot was cited for disorderly conduct after reportedly throwing snowballs and pushing a security guard during Saturday’s game against Pittsburgh. Heavy snow covered the field and stands, and students were warned to stop throwing snowballs. After the mascot, who was not identified, was detained and cited, a backup Bearcat took his place in the second half.
And now, a video of the "incident"