A seven-year-old boy was knocked off his bike by other children and assaulted in an appalling hate crime attack in Liverpool.

Footage shows the young thugs target the group – a Polish woman, a seven-year-old Lithuanian boy, a baby in a pram and a six-year-old boy – in a park in Knotty Ash, Merseyside.

British children, aged approximately 10-12, started hurling stones and bottles at the group on Ackers Hall Avenue, Liverpool Echo reports.

A video of the attack and the abuse has gone viral on social media, captured by the Polish woman as she tried to get the children she was looking after to safety.

A girl runs up to the woman and hurling an object at her, and then sticks up one finger at her.

A girl throws a bottle at the woman and the children
A girl throws a bottle at the woman and the children

She mocks her accent, and one of the children calls her a "little dog".

One of the lads, also seen throwing items, warns her: "Get me off that video now, it's p***ing me off!"

In the footage, the Polish woman repeatedly tells the children to "leave us alone" and threatens to show the footage to the council.

The seven-year-old boy was knocked off his bike and had his leg jumped on by a lout, in a moment not caught in the video, Liverpool Echo reports.

Verbal abuse was hurled at the group including a boy who was heard to say: "F***ing Polish b*****d", and other xenophobia-fuelled insults.

A gang of kids try to intimidate the woman and young children
A gang of kids try to intimidate the woman and young children

Merseyside Police confirmed they were investigating the incident, which happened at 7.15pm on Sunday, September 13, as a hate crime.

Arnas Levonas, a 34-year-old construction site manager, originally from Lithuania, said his son didn't understand why he was attacked.

He said: "My boy was really upset and kept asking, 'why did they do it?'"

"It's hard to explain to a seven-year-old why other children would do this," he added.

The dad-of-one said the Polish woman in the video is a friend of his and was also very upset by the incident.

A Merseyside Police spokesman said: "We are appealing for information after a report a seven-year-old boy was assaulted by a group of boys in Knotty Ash on Sunday.

"It was reported at 7.25pm that the boy had been hit and had stones thrown at him by the group on grass off Ackers Hall Avenue.

"We are aware of footage online allegedly showing the aftermath of the incident, in which children appear to throw items and direct verbal abuse towards the person filming.

"We have launched an investigation into this incident, and are appealing for any help from the public to identify those responsible."

Anyone who witnessed any part of this incident or has heard who is responsible is asked to contact the police.