The 17-year-old pop star arrived at Macy's flagship store...to debut his new fragrance, "Someday." According to reports, the crowd went wild when Bieber stepped outside to greet fans...As the crowd surged, an undercover cop stepped forward in an attempt to protect the singer. But the plainclothes policeman was mistaken for a crazed fan and was quickly restrained by one of Bieber's bodyguards.
— A little kerfluffle at the New York City launch of Justin Bieber's Someday...read more at Justin Bieber Startled By Cop Mistaken for Crazy Fan in NYC at Billboard. Hat tip to Jessica!