This video shows the dramatic moment an attempted murder suspect was tasered and bundled into a police van by 20 officers following a tense stand-off in east London during which he allegedly shouted: 'I am your king.' Before tasering him and knocking him to the ground, police are shown spraying the man with CS gas - which has no effect. After firing the taser, they rush to surround the man, who has dropped his weapon, and appear to secure him to a stretcher while he shouts. Neighbours in the Hackney street, alerted by the noise, rush out of their homes...