COLLEGE PARK, Md. (WJLA/AP) - A prosecutor says two police officers abused their power when they assaulted a University of Maryland student during a rowdy post-game celebration two years ago.

But lawyers for the officers say their clients were merely "foot soldiers" who followed their commanders' orders and exerted legal and appropriate force.

Jurors heard opening statements on Monday in the trial of Reginald Baker and James Harrison, two Prince George's County police officers accused of beating up John McKenna as students celebrated the men's basketball team's victory over Duke on March 3, 2010.

McKenna was struck with police batons as he skipped down the sidewalk with his arms raised in celebration. Defense lawyers say he ignored orders to stop and turn around. The two officers were indicted last year following a lengthy investigation.

A video taken from a dorm room window shows officers in riot gear striking McKenna with batons after he comes up the sidewalk in celebration and comes near officers on horseback.

The two officers were indicted last year following a lengthy investigation.