Police are hoping someone will come forward and identify a man who appeared to attack a woman at Birmingham Pride.
They have released CCTV footage in order to help with the investigation following the assault on Hurst Street just after 6pm on 25 May.
In the video, it appears a man wearing a purple cap and purple T-shirt began arguing with a woman.
When she reacted, he grabbed her around the neck and pushed her into the floor in the middle of a busy street.
With people pulling him off, he then walked off through the crowd.