Tommy Robinson sent a football fan crashing to the floor with a sickening one-punch blow outside last night's England game.
The far right extremist was in Guimaraes, Portugal, for the Nations League semi-final with several of his supporters.
The failed MEP candidate can be seen in footage exclusively obtained by Mirror Online wearing a camouflage jacket and striding among fans.
In the video, one man puts his arm around Robinson before raising his fist to the air.
As an inaudible exchange between two groups appears to intensify, the 36-year-old walks towards a fan and lands a blow to his face.
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The man punched by Robinson can be seen lying on the ground wearing an England away shirt, struggling to get up as his pals come to his aid.
Another man approaches Robinson and says: "There's no need for that, is there?"
A voice, thought to be Robinson's, responds: "You'll get knocked out again bruv."
After a pause of a few seconds, a man says: "F*** about again, you'll get knocked out again bruv."
Other supporters can be heard shouting: "Go on Tommy lad."
Some people can then be heard asking for a picture with Robinson.
On Wednesday Robinson, real name Stephen Yaxley-Lennon, said in a selfie video he was in Portugal for the game.
Wearing the same jacket as the video, Robinson winks at the camera and says: "I'm in Portugal...at the game, no football banning order here mate."
In another video on social media, published on Wednesday, Robinson is in Stansted Airport, again wearing the same jacket, when a bystander approaches him and asks if he knows where the prayer room is.
The build up to the Nations League semi-final was marred by violence between England fans and police.
The behaviour of fans was branded 'an embarrassment'.
Two England fans were arrested in clashes with riot police on Wednesday night and two officers were injured.
Songs about the RAF and German bombers were sung by England fans and bottles thrown in the direction of the Polícia de Segurança Pública officers in full riot gear.
Deputy Chief Constable Mark Roberts, head of the UK football policing unit, said the FA's attempts to prevent trouble had failed this week after some England supporters were involved in clashes with police.
An estimated 18,000 England supporters have descended on Portugal for the Nations League finals, which conclude on Sunday.
Some sections of England fans were reported to be chanting in support of Robinson last night and in some bars before the game.
England lost the game 3-1.
Mirror Online has attempted to contact Robinson this morning without success.
It is not known if the incident was reported to Portuguese police.
