A teenage girl said she thought she was going to die when a bouncer "put her in a chokehold" at a music venue.
Footage taken at Rainton Arena in Houghton-le-Spring, Tyne and Wear, shows the doorman with his hands around 14-year-old Amarii's neck.
She had been ejected from a teen disco but the footage, seen millions of times online, captures the security guard push her out of the building.
Amarii has today said she has struggled to sleep since the incident, and she no longer likes being "in crowded spaces".
"Things that I found funny just aren't funny any more," the teenager said.
She told BBC's Newsbeat she feared for her life.
Rainton Arena, which hosts music and entertainment events, says it's co-operating with police, and the security company it uses has sacked the staff member.
But shouts of "get off her" and screams come from behind the camera in the clip.
Amarii said she got into an argument with door staff when they refused to let her re-enter the venue.
She added two bouncers came over to calm the situation, until a third "came out of nowhere" and "started screaming and shoving".
Her mum, Gemma, said things escalated when Amarii got upset at being pushed.
In the Newsbeat interview, Gemma said Amarii "got a bit mouthy" but wasn't "any kind of threat to anybody", and the reaction was over the top.
Some people online suggested Amarii was drunk, an allegation Gemma vehemently refutes.
The mum continued: "The children had to be breathalysed before they went into the event, so how could she have been drunk?
"She wasn't drunk. It's just ridiculous that people are actually trying to find some kind of blame.
"She's had posts saying she deserved it because of the way that she was dressed, which is just absolutely outrageous."
Northumbria Police is investigating the episode, as Rainton Arena it itself had referred the case to the force.
"The venue will not accept this type of behaviour towards anyone," it wrote.
"This is not how anyone should be made to feel at any event.
"Staff and event organisers are all parents, and we are not happy with the actions of the individual.
"The child's parents have been contacted and shown all CCTV as we will be fully co-operating with the parents and police."
Police say no one is believed to have been seriously injured, and urges anyone with information to get in touch.
