Story highlights Surveillance video of a police beating reveals officers falsified their report

Victim Najee Rivera had been charged with aggravated assault

A grand jury dropped all charges against Rivera

This week the police officers were charged instead and have been suspended from the police force

(CNN) Police in a patrol car chase down a man on a scooter. The car stops, and two officers get out and beat the man with their fists and batons. His orbital bone fractures and he suffers lacerations on his head, yet he is the one who is charged with aggravated assault.

This week, the tables turned when a surveillance video from a nearby store led to charges of aggravated assault, criminal conspiracy and filing false reports against Philadelphia police officers Sean McKnight and Kevin Robinson in connection with the May 29, 2013, arrest of Najee Rivera.

"I will prosecute these two officers to the fullest extent of the law. Simply put, no one -- not even police officers -- is above the law," said District Attorney Seth Williams.

Rivera's girlfriend tracked down the surveillance tape, according to CNN Affiliate WPVI , and it became key evidence in a grand jury investigation, in which Rivera testified that he got scared and drove away on his scooter after McKnight and Robinson pulled him over, stepped out of their car with batons extended and said, "Come here!"

What happened next was captured on the surveillance video and contradicts the original police report claim that Rivera grabbed Robinson and "slammed him against a brick wall." It also accuses Rivera of "throwing elbows during the struggle."

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