Six men who sparked mass disorder across Britain by turning a protest over the death of Mark Duggan into a riot have been locked up for a total of nearly 12 years.
The thugs - including a boy from Palmers Green, took part in the demonstration outside Tottenham Police Station, two days after Duggan was shot dead by police.
Marcus Knox-Hooke, 31, was a close childhood friend of Duggan who went along to the protest on August 6 last year, Wood Green Crown Court heard.
But he ended up joining others who set about trashing a police car before joining Dwayne Newland, 23, Jamal Mullings and Shaun O'Neil, both 19, and Ashley Fagan and Isaac Amoah, both 17, in the looting.
A judge handed the six sentences totalling 11 years and seven months.
Prosecutor Jane Osborne described how the peaceful protest turned into violence when darkness fell.
She said: “A group began to attack police vehicles and to break into premises, and when police officers attempted to intervene and calm down the violence, they were attacked with missiles.
She added: “During the course of this evening, more specific acts of looting and violence also took place.
“Some were committed by large groups of youth, and include most of these defendants - others are committed by one of the defendants acting alone.”
The court heard how Knox-Hooke, O'Neill, and Fagan were in Forster Road when two police cars were smashed and set on fire.
Knox-Hooke was caught on CCTV kicking the car and releasing the handbrake on another, and later held the shutters up on the Paradise Gems jewellery store as rioters burgled it and burned it down.
The shop's owner, Stephen Moore, lost £403,000 of goods from the store he had run for 35 years as it was burned to the ground.
Knox-Hooke also robbed a £100 bag of change from a terrified Ladbrokes cashier and burgled the Quicksilver amusement arcade, scuffling with a security guard.
Defending, Terry Munyard, said he had been “crushed by what had happened to his friend”.
Sentencing Knox-Hooke and Amoah, the judge Mr Recorder James Dawson said they were part of a “disgraceful night of disorder”.
He said: “In your case, Mr Knox-Hooke, I have watched the CCTV and I can see you were taking a great deal of pleasure in causing that mayhem.”
He added: “I am satisfied that all of your cases have crossed the custody threshold and only a custodial sentence is appropriate.”
The judge lifted reporting restrictions protecting the anonymity of the 17-year-olds after hearing representations from the press.
Mullings, whose lawyer David Burgess described him as 'a friend of Mark Duggan's mother', had thrown a bottle he had been drinking from at police as he circled on his bicycle.
He then joined Newland and Knox-Hooke to loot the Quicksilver arcade, while O'Neil and Knox-Hooke robbed the Ladbrokes betting shop.
Knox-Hooke, of Bronhill Terrace, Lansdowne Road, Tottenham, was sentenced to 32 months in prison after pleading guilty to four charges; 20 months for violent disorder, two months for the burglary of Quicksilver, eight months for the robbery of Ladbrokes, and two months for the burglary of Paradise Gems.
O'Neil, of Arnold Road, Tottenham, was sentenced to a total of 32 months in a young offenders' institution; 20 months for violent disorder and 12 months for the robbery of Ladbrokes.
Newland, of Pembury Road, Tottenham, will serve 31 months in a young offenders' institution; 28 months for violent disorder and three months for the burglary of Quicksilver.
Mullings, of Kitchener Road, Walthamstow, north east London, was handed 21 months in a young offenders' institution; 18 months for violent disorder and three months for burglary.
Fagan, Griffin Road, Tottenham, who was just 15 at the time of the riots, was given a ten-month detention training order for violent disorder.
Amoah, of Firs Lane, Palmers Green, north London, who was 16 at the time of the disorder, was given an eight-month detention training order after pleading guilty to violent disorder.
Fagan and Amoah's identity had previously been protected for legal reasons but Mr Dawson lifted reporting restrictions to the 'overwhelming public interest' in last summer's disorder.