SHOCKING footage shows the moment a woman slapped a stranger's child as she walked past.
But the attacker was soon delivered instant karma by a furious onlooker in Brazil.
CCTV shows a mum and daughter strolling down a street as a woman in a pink dress approaches from the opposite direction.
As she goes past them, she suddenly sticks out her arm and smacks the youngster across the face.
Fuming, the mum tries to go after her but her daughter pulls her back.
Police in Barcelona investigating sexual assault allegedly involving Dani Alves
A man then comes running into the frame and kicks the woman to the ground.
He then tries to kick her three more times but only connects once.
The raging woman then gets up off the ground and shouts at the man.
A concerned group of witnesses can be seen consoling the mum and daughter.
Social media users hailed the man for defending the youngster and dishing out instant karma.
One wrote: "She got what she deserves."
Another said: "That was appropriate."
A third added: "Wasn't good enough if you ask me."
It is unclear why the woman decided to slap the child as she walked by.