The man is repeatedly hit in the face and his head is slammed into the ground by one of the officials.

Randall Worcester, 27, allegedly pushed a delegate to the ground when officials confronted him.

Terrorist sabotage, resisting capture, and criminal trespass are among the charges against Mr. Worcester, who was taken to a clinic.

the suspect while another over and again knees him toward the back. They're both dressed alike in uniform

The suspect appears to be attempting to curl up into a ball while covering his head with his hands.