A five-year-old girl asked her mum a heartbreaking question as fundraising posters with pictures of her were found torn.
Little Rosie, who has Spastic Diplegia Cerebral Palsy , said: "Mummy, why would somebody rip it, they ripped my face."
Her mother Daria Kader said it makes her "very sad" and told how the incident brought her to tears.
Daria had put up two posters to let people in their neighbourhood know they are fundraising for their "popular" girl's life-changing surgery.
But she says she found a "vile individual" had ripped the notices.
The mum, from Plumstead in London, shared a video showing the torn posters.
Daria said: "The saddest thing is to come back this evening to see some vile individual had ripped the notice and threw it in a corner.
"It’s got her little face on it, as you can see. It brought me to tears, but I had my little girl with me, and I didn’t really want to show her that I was that upset about it.
"Her response was: 'Mummy, why would somebody rip it, they ripped my face.'"
She added: "It still makes me very sad."
Daria says she's going to put up a new poster which says "whoever you are, I hope karma goes to show you what that feeling is like, for what you did to our posters was inhumane and vile."
She called the actions "horrible" and a "serious matter".
Rosie’s Legs is a campaign raising money to fund a type of surgery and rehabilitation process known as SDR (Selective Dorsal Rhizotomy), her fundraising page says.
The Justgiving page says: "Rosie was born 8 weeks premature. At the age of one she was diagnosed with cerebral palsy, a particular type known as spastic diplegia which means the brain damage occurred at birth has predominately affected her lower limbs.
"Rosie is an incredibly curious and active 5 year old from Plumstead in London.
"She wishes to run, jump, climb, sit straight without losing her balance, play football and dance.
"Rosie has a fighting spirit, determined and willing, she is bubbly, creative, thoughtful, smart and very popular amongst her peers."
The page says the family needs £100,000 to cover the cost of surgery, rehabilitation and equipment needed.
To donate to the Justgiving page, click here.
