There is controversy in Britain over security camera footage that appears to show a police officer hitting a 19-year-old woman five times.
The woman, who had been drinking and was being thrown out of a nightclub in Sheffield, has laid a complaint. An independent investigation is now underway.
Claiming to have been having an epileptic seizure at the time, she was dragged to a police van with her trousers around her ankles.
The policeman, who has been taken off public duty, says he hit the woman to subdue her and in self defence because she was being violent. She later admitted a charge of damaging a car.
The woman has also suggested that her race may have been an issue in the way she was treated.