Here is her account from the article below:
He was driving after me and I was scared. He kept slowing down alongside me, so I cut all the way over to the left lane. But he angrily skidded to a stop in front of me, pulling his car perpendicular to traffic in the left lane. Then I got off my bike and tried to walk my bike onto the sidewalk because I wasn’t going to run out into traffic. That’s when he grabbed the back of my bike and started pulling it.
He didn’t say he was a cop and I thought, ‘This guy’s crazy, he’s attacking me!’ I screamed for help and he started restraining my arms and holding me so I couldn’t move. People on the street stopped and started asking him what he was doing. I did not hear him say he was a police officer or see any indication he was a police officer, so I was terrified. Then an NYPD squad car arrived and my initial thought was that they were going to save me from this guy; I figured the bystanders had called 911.
She was wrong. They put her in cuffs and confirmed that they were from the Central Park precinct. The officer is identified only as “Sgt. Santiago.” She was charged with reckless operation of a bicycle and disorderly conduct.
She says that he told her that, when she avoided his car door, she went into traffic and that was reckless.
This seems to be an ongoing war between New York police and bicyclists. New York officers have been previously accused of charging bicyclists with trumped up charges to cover misconduct (here and here) as well as false charges in criminal cases (here).
Source: Gothamist