Police have launched a hunt for a man caught on camera violently pushing a female cyclist off her bicycle.
While passing close by to him at a crossing she says: "Please don't try and knock me off."
The man tells her to shut up and then goes out of view.
A few seconds later he appears at her side and shouts: "You want to put your finger up at me your mug?! Come on!"
He then violently pushes her to the ground.
The incident happened in Whitechapel, London.
If you recognise the man call call 101 and quote reference number 180410.