Donald Trump Calls to 'Bring Back' Penn State Coach Joe Paterno as Clashes Erupt Outside

The mention of the late football coach seemed out of place.

Meanwhile, outside of the rally in Pittsburgh, hundreds of protesters gathered to protest Trump. Tensions ran high and obscenities flew from both sides when protesters and Trump supporters clashed after the rally let out.

Video obtained by ABC News shows protesters being pushed to the ground by police after a skirmish erupted; another video shows a local reporter being shoved by an officer.

Pittsburgh Police on the scene referred all requests back to their command station. A request for comment by ABC News has not yet been returned.

Paterno died in 2012, two months after he was fired from Penn State.

Trump's campaign later clarified that he was talking about a bronze statue of Paterno that used to stand in front of Penn State’s Beaver Stadium.

Paterno's family has maintained his innocence.