New York Police Department officers berated a young African-American man named Alvin during a so-called stop-and-frisk in 2011, an audio recording obtained by The Nation revealed.

In the clip, the officers tell Alvin that he is being stopped because he kept looking at them with his hood up. As he was being searched, one officer threatened to arrest Alvin for "being a fucking mutt." Another officer added: "Dude, I'm gonna break your fuckin’ arm, then I’m gonna punch you in the fuckin’ face."

But the officers were apparently unable to find anything illegal on Alvin and he was not arrested.

"He grabbed me by my bookbag and he started pushing me down. So I'm going backwards like down the hill and he just kept pushing me, pushing me, it looked like he we was going to hit me. I felt like they was trying to make me resist or fight back," Alvin told The Nation.

New York City's controversial stop-and-frisk policy allows police officers to stop, question and search anyone who looks suspicious. The policy is aimed at finding illegal guns and drugs, but has face a slew of criticism from those who contend the aggressive searches target ethnic minorities.

The NYPD detained 684,330 people in 2011 under the city's stop-and-frisk policy. At least nine out of 10 people stopped were innocent, and 87 percent of them were either black or Latino.

Watch video, courtesy of The Nation, below: