Footage shared on social media, filmed at Manchester Airport’s terminal two on Tuesday, shows the officer - who has now been suspended - stamp on the head of a man.
The teenager is 'fighting for his life', a lawyer representing the family has claimed. Akhmed Yakoob says the man - believed to be Fahir Khan, 19 - has a cyst on the brain and has been admitted to hospital.
Speaking to reporters outside Rochdale police station, Mr Yakoob said Fahir's health has declined since the incident. He said: "He has got a brain injury. He has been diagnosed with a cyst on his brain."
A Stand Up To Racism march on Thursday night saw protestors gather outside Andy Burnham’s office before blocking tram tracks.
1. Manchester Airport police video protests
People gather outside the office of Andy Burnham | Getty Images
2. Manchester Airport police video protests
A woman speaks to the media as people gather outside the office of Andy Burnham | Getty Images
3. Manchester Airport police video protests
Protestors demonstrate in St Peter's Square | Getty Images
4. Manchester Airport police video protests
Protestors demonstrate in St Peter's Square | Getty Images