Shocking video of a pensioner being karate-kicked to the floor by a young thug in a Smurfs t-shirt has been released by police.
CCTV footage showed a second man then jumping on the pensioner's chest in the attack in Wolverhampton bus station.
The karate-kicker is described as a black male in his late teens or early 20s and of slim, muscular build and was wearing a distinctive black top with a Smurf character on the front and the word 'Nerd'.
He was also carrying gold, draw-string JD Sports bag slung over his shoulder.
His partner in crime is described as a lighter-skinned black male with short afro-style hair.
He was wearing a three-quarter length black jacket with the collar up and a pair of white headphones.
Sergeant Adrian Brown, an Investigating officer from the Safer Travel Police Team, said: 'The elderly man is seen wandering through the bus station. He looks unsteady on his feet and may well be drunk.
'The footage shows him talking to people in the station and it appears the offenders have taken objection to whatever he was saying.
'But no matter what he said there is absolutely no excuse for the punishment they mete out on what is a vulnerable, defenceless victim.
'He is kicked to the floor and, whilst prone on the ground, another man jumps in the air and stamps on his chest.
'Both attackers run off leaving the victim unconscious on the floor before other members of the public come to his aid and call for an ambulance.
'It’s a sickening, cowardly attack and I’d urge anyone who believes they recognise the men, or has any information about the assault, to contact us.'
Watch the shocking video below