A video trending online shows the moment a school girl bullied and attacked a Muslim girl in the school's rest room.

In the video, the white girl is seen confronting the Muslim girl.

She soon starts hitting her, pushed her into a toilet stall, and throws her to the ground then continues hitting her.

"Leave me alone," the Muslim girl kept screaming while trying to push her assailant off her.

But her attacker continued hitting her while someone filmed.

The incident happened at Chartiers Valley High School in Pittsburgh.

Charges have been filed against the bully.

Watch the video below.