An Asian man was attacked by a group of youths as he distributed leaflets.
The 30-year-old was racially harassed and assaulted in Carew Road and Demesne Road, Wallington on October 27.
Police want to speak to anyone who intervened during the incident and may know the identity of the suspects.
Witnesses or anyone with information should contact Detective Constable Adam Bryant at Sutton Police station on 020 8649 0594 quoting reference number 4013511/07 or Crimestoppers anonymously on 0800 555 111.
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