NYC subway musician arrested after cop reads him law that permits him to play

A New York City police officer was recorded arresting a man singing in the subway after reading aloud the exact law that permits performers to be there.
The incident was recorded by an onlooker, and uploaded to YouTube. In the video, the singer can be heard telling the officer to look up section 1050.6c after the officer tells him he's going to arrest him for performing in the subway without a permit.
"We got bigger problems in New York City than someone playing the guitar," said one onlooker off-camera.
The officer looks up the law and proceeds to read the statute aloud, which says that "artistic performances, including the acceptance of donations" are permitted as long as they do not "impede transit activities."
The onlookers applaud as the officer reads the law. He then proceeds to tell the singer that he is being ejected anyway. The singer refuses to leave and goes back to playing the guitar, receiving a round of applause from the onlookers.
The audience continues to grow, and they begin heckling the officer, asking him on what grounds he is attempting to force the man out of the station.
The officer's backup arrives, and he violently removes the guitar and forces the singer against the wall to arrest him. Loud boos can be heard, and soon calls of "f--- the police" come from the crowd as the officers remove the man and his guitar, case and donations from the scene.
According to NY1, the man was arrested for loitering. The incident happened early Friday morning at the Lorimer Street-Metropolitan Avenue station.