The New York Police Department’s stop-and-frisk practices have raised serious concerns over racial profiling, illegal stops and privacy rights. In new audio recordings, allegedly of the NYPD performing a stop-and-frisk of a 16-year-old Harlem teen, police officers are heard calling the teenager a “f**king mutt,” and repeatedly threatening him with violence.

The profanity laced-clip, obtained by The Nation, was recorded by Alvin in secret on June 3, 2011.

During the two-minute recording, Alvin is repeatedly heard asking the officers why they have stopped him. Neither officer provides much of an answer. Instead, the officers can be heard threatening the teen and claiming they will “break [his] f**king arm” and slap him in the face.

Later an officer answers the teenager and tells him he’s been stopped because he’s a “f**king mutt!”

The officers also threaten Alvin with an arrest.

The audio adds to already mounting criticism of the stop and frisk policy from several civil rights advocates, community groups, and local politicians. Those opposed to the police practice say it disproportionately targets blacks and Latinos in New York City.

In 2011, of the nearly 700,000 people stopped by NYPD, 87 percent were either black or Latino.

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