NEW YORK - Police stripped a New York City officer of his badge and gun Monday after a video posted on YouTube showed him body-checking a bicyclist who was part of a Times Square demonstration.

The video was recorded Friday at the Critical Mass ride, a monthly protest of urban reliance on motor vehicles.

The video, posted anonymously, shows the officer standing in the street as bikes whiz past. He moves toward a cyclist and violently knocks him to the ground in front of crowds of people.