A 14-year-old girl was filmed as she was punched and kicked by a bully before the distressing footage was posted online.
Erin Philips was walking home from school in Upton, Chester, when she was ambushed by an older girl as her accomplices filmed the attack.
Horrific footage shows Erin being grabbed by the hair before being kneed repeatedly in the face as she tries to shield her head.
Within hours, the footage had been widely shared on social media and the school girl began to receive abusive messages.
Her parents have called the assault 'disgusting' and have shared the footage on Twitter to call on social media giants to stop bullying videos being posted online.