This is the shocking moment police tasered a violent robber who targeted a man with learning difficulties and savagely stabbed another.
The clip, captured by an onlooker, shows thug Ryan Tudor, 27, being warned to stay still by police.
But he puts his hand in his waistband and throws his weapon on to a nearby roof – forcing the officer to fire the Taser into his back.
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He swiftly falls to the floor and is handcuffed as locals shout abuse and threats at him.
Tudor was collared after the attack in September in Southend-on-Sea, Essex, and the arrest was captured by a local who helped chase him down.
The yob stabbed the victim, 20, in the head and slashed his clothes with a knife – thankfully he escaped with minor injuries.
This was just one week after he robbed a man with learning difficulties after watching him withdraw money from a cash point.
Violent Tudor then cycled after the 38-year-old, grabbed him by the coat and threatened to stab him.
He stole his mobile phone and £20 in cash, punched him in the face and cycled off.
The crook was identified through DNA left on the collars of the victim’s coat and shirt.
Today, Tudor was jailed for 17 years after previously admitting robbery, wounding with intent to cause GBH and possession of an offensive weapon.
He changed his plea midway through a trial and was today sentenced at Chelmsford Crown Court.
Investigating officer PC Rosie Digweed, of Southend CID, said: ‘He targeted a vulnerable man and threatened him with a knife in a sickening attack, all for the sake of £20 and a mobile phone.
‘And his second victim was lucky to escape with relatively minor wounds after being stabbed in the head and body.
‘The court heard Tudor committed these atrocious acts of violence while on parole for life after previously being released from prison.
‘The judge described him as a dangerous offender who was capable of killing someone, which is reflected in the lengthy jail term he has been handed today.
‘I hope the victims and the wider Southend community have some comfort in the knowledge that he will now stay behind bars for a considerable time.’