Dramatic moment Met Police officer repeatedly punches hooded man in the face before brandishing his Taser after responding to reports of knifeman - as Scotland Yard launches probe into video
Members of the public filming the incident in London could be heard begging the officers to stop while two other men approach before being told to move back, move back.
City Of United Kingdom Metropolitan Police Officer Fulham Palace Road Professional Standards Met Police
Source: dailymail.co.uk