A man seriously injures a police officer by pushing her down stairs during a protest in this shocking footage.
Jamie Dewing, 31, was caught on camera shoving the officer, who now needs physiotherapy on her neck and back, during a June demonstration in Parliament Square, London.
CCTV footage also shows Dewing throwing items including a metal barrier at officers and spitting at them on the same day.
After initially denying the offences, he pleaded guilty to one count of assaulting an emergency service worker and one count of violent disorder at Teesside Magistrates' Court last Thursday.
Dewing, of Valley View, Saltburn-by-the-Sea, travelled from his home to join hundreds of demonstrators in central London on June 13, and was one of the minority who became increasingly hostile to police.
At around 1pm, Dewing squared up to officers who were attempting to control crowds near the Nelson Mandela statue, where he shoved the female officer.
He was identified by a Cleveland Police officer during an investigation into the violence, after his photograph was released to the media.
Dewing will remain in custody until his sentencing at Southwark Crown Court at a later date.
Detective Constable Nicky Dixon, who is investigating the recent disorder, said: "Dewing initially denied that he was the man responsible for pushing one of our colleagues, claiming that it was someone else.
"However, he quickly changed his mind when he was in the dock, admitting both charges against him.
"Footage from nearby police shows the force he used to push the officer - his actions were completely reprehensible.
"I'd like to thank Cleveland Police for their help in identifying Dewing."
