A disabled seven-year-old girl was assaulted by a "thug" who then shouted abusive language towards her.
The incident happened at 10.55am on Friday, December 9, outside the Eye Infirmary on Queen Alexandra Road, Sunderland.
Police say the girl was pushed from behind, causing her to fall to the ground, before the offender used abusive language towards her before walking away.
The girl was not injured in the incident but was left shaken.
The offender is described by police as a male aged in his early 20s, and he was wearing a grey Nike hooded top with a large Nike logo on the front, grey tracksuit bottoms, black trainers with a gold Nike logo on and a black baseball cap.
Neighbourhood Sergeant Neil Hudspeth said: "We simply won't tolerate attacks like this happening in our community.
"An innocent seven-year-old has been walking with her father when for no reason she has been pushed to the ground by someone who can only be described as a thug.
"We are doing all we can to find the person responsible and would urge anyone who has any information to please come forward and speak to us."
Anyone with information should contact Northumbria Police on 101 quoting reference 371 091216, or Crimestopppers anonymously on 0800 555 111.