This is the shocking moment a Russian policeman is captured violently beating a man after he allegedly refused to give proof of identity at the airport.

The footage, captured on August 19 in Moscow Domodedovo Airport, shows a policeman repeatedly punching the man after giving him a knee strike in front of his son and wife.

The son can be seen throwing a bag at the police officer in an attempt to help his father. Meanwhile, the man’s wife sits on a chair pinned down by another officer.

The filmer later wrote online: ''I saw two adults and a child waiting for their flight when two policemen came across and asked them for the proof of identity.

''The man seemed a bit tipsy and he stood up and lost his balance. He wasn’t disrespectful.

''Instead of taking care, one of the cops started to beat him and another one grabbed a woman

''Policemen kept on hitting a man while the kid was trying to help his dad to escape.''

Moscow police have not yet commented on the incident.

Sunday evening, Domodedovo airport. 2 adults and a child been waiting for their flight, when 2 policemen came across and asked them for the proof of identity. Man stood up and due to the alcohol he had before, lost his balance and almost fell down. Instead of taking care, one of the cops started beating a man and another one grabbed a woman in order to not let her move. Policeman kept on hitting a man while kid was trying to help his dad to escape.