Police strike suspect pinned face down by four officers in Cardiff

This is the moment up to five police officers pinned down a suspect and two appeared to punch him during a late-night arrest.
Officers have been accused by a witness of using 'excessive force' and 'brutality' on the suspect in Cardiff in the early hours of Saturday morning.
South Wales Police claim the unnamed man, who had allegedly carried out a violent assault nearby, was resisting arrest.
But the footage taken at the scene shows the suspect unable to move because he was held down.
o officers appear to strike him several times before he is carried into the back of a police van.
The incident took place at around 12.15am on Saturday morning outside the Queen's Vaults pub in Westgate Street.
It was filmed by a member of the public who asked to remain anonymous and told MailOnline that the response by police was 'shocking'.
He said: 'I was walking along the street to meet some friends when I heard the commotion and pulled out my phone to film it. I have no idea what he had done.
'But it was shocking to see him being hit. I asked them to stop and so did another member of the public. 10 or more people saw it.
'There were four to five police on top of him and two appeared to punch him around the lower back area and where his head would be. He couldn't move.
'I would say they were using extreme force and it was brutality. If there was just one officer and they had to defend themselves I could understand but there was a big group of them'.
South Wales Police has refused to comment on the video but a spokesman said they have not received any complaints from the public.
They said that the suspect was resisting arrest and had been charged with a violent assault, and would appear in court.
A force spokesman said: 'Mark Grainger Mace, 25, from Gabalfa has been charged with assault and use of abusive language following an incident on Westgate Street in the centre of Cardiff. He has been bailed to appear before Cardiff Magistrates Court on April 10'.