Armed police tasered a knifeman who had threatened to kill a white person The man had been prowling a busy east London street brandishing a huge knife
The 50-year-old is seen lying on the ground with the knife still in his right hand
He was arrested on suspicion of possession of an offensive weapon and remains in custody
Dramatic footage captures the moment armed police tasered an out-of-control knifeman who had been threatening to cut the throats of white people.
Terrified witnesses say the man was shouting 'I want to kill someone tonight,' as he made his way through Hackney, east London brandishing the 'nine inch' blade.
Heavily-armed officers rushed to the scene, and according to one witness, were there within four minutes of the initial call, and incapacitated the man shortly after.