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.
The officer in the video was placed on desk duty pending the outcome of a police department investigation, chief police spokesman Paul Browne said. The officer's name wasn't released.
The biker, Christopher Long, of Hoboken, N.J., was arrested because he was obstructing traffic in the heart of Times Square, a criminal complaint said. He was charged with attempted assault, resisting arrest and disorderly conduct.
The complaint said Long, 29, deliberately steered his bicycle into the officer, causing both of them to fall to the ground.
During his arrest, Long squirmed and kicked, saying to the officers, "You are pawns in the game. I'm gonna have your job," the complaint said.
There were no other arrests during the ride.
Long's lawyer, David Rankin, said he hopes the Manhattan district attorney's office will drop the charges. The district attorney's office said it was investigating.
Long's next court date was set for Sept. 5.
