A video shows supporters at a Donald Trump rally in Central Pennsylvania roughing up a protester in their midst on Monday.

The supporters chanted "USA, USA," as the male protester is pummeled and ends up with a bloody nose in the fracas at Cumberland Valley High School in Mechanicsburg, Cumberland County.

PennLive reports that the protester, who was escorted to safety by a police officer, declined to press charges, but could do so later.

Warning: The video contains graphic language.