A horrifying video is shocking the nation because so many stood there watching and nobody called the cops.
When she was beaten to the ground the attackers continued to punch and kick her.
One witness even makes a disturbing joke, "Yo, she's dead. It's a murder!"
The teen was hospitalized.
The McDonald's on Flatbush Avenue is where the 15-year-old girl was beaten. Her high school, Erasmus Hall is on the same block and the students from the school often hang out here. Now, everyone is in shock.
Community activist Tony Herbert said, "The tenacity of placing something on video to shoot a young lady being beat down by six or seven young women is ludicrous in our community."
Workers at the McDonald's said they called 911 twice within six minutes.
Police reportedly believe the teen had been feuding with other students and came to the McDonald's to settle the score. Witnesses say she allegedly threw the first punch but she was quickly overpowered.
As the video ends, she was helped to a bench where she is laid down, and covered her bloodied face.
The victim, whose name has not been released, suffered two black eyes and multiple bruises.
Police say they have ID'ed some of the attackers but cannot arrest them because the victim is reluctant to press charges. The teen is reportedly afraid to speak to police for fear of retaliation.