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Hero bystanders are seen wrestling a knife from a youth after he allegedly stabbed a man in the hand in the middle of a east London high street.
A shocking video clip shows two men trying to grab the weapon off a the suspect in broad daylight near Upton Park Tube station.
Terrified passersby look on as the youth pushes the group from the pavement, and into the path of approaching traffic.
Another then bravely runs to their help and attempts to stop the suspect holding the knife.
Dashcam footage shows the incident happening behind a bus in the middle of Green Street, shortly before 1pm on Saturday.