This is the shocking moment a man is knocked unconscious after an apparent prolonged racist rant on a London central line train.
Footage posted online shows a white man in a heated confrontation with other passengers as the Central Line train pulls into Bank station in Central London on Saturday evening.
The man, who has a shaved head and is wearing a blue T-shirt and beige shorts, is filmed shouting at a group of black passengers: 'This is my home and you're all going back. You know it as well.' When asked by the group where they will be going back to, he shouts: 'You know where you're going back.'