SADNESS gave way to fury last night as angry locals demanded to know how the devastating Grenfell Tower inferno was allowed to happen.

London Mayor Sadiq Khan and TV’s Jon Snow were heckled during visits to the scene after it emerged that the fire’s rapid spread was “entirely avoidable”.

12 London Mayor Sadiq Khan was today confronted by a young boy at the scene of the Grenfell Tower fire Credit: PA:Press Association

12 London Mayor Sadiq Khan today faced a furious crowd at the Grenfell Tower scene and told them ‘I share your anger’ Credit: Getty Images

Friends and families of victims, including ­a furious seven-year-old, confronted the Mayor with the question: “How many children died? What are you going to do about it?”

Schoolboy Kai Ramos was among an angry crowd of 300 people visited by Mr Khan outside the smouldering remains of Grenfell Tower.

The youngster’s questions came as David Lammy MP said the fire was “corporate manslaughter” and called for arrests.

12 London Mayor Sadiq Khan listens to a woman at an event where he addressed a crowd of people near the scene of the fire which destroyed the Grenfell Tower block Credit: Reuters

Up to 30 police swarmed around Mr Khan after a bottle was allegedly thrown at him and a man was led away by cops.

Little Kai was hauled on to the shoulders of an older lad to harangue the mayor in scenes captured live by Sky News.

Mr Khan told him: “The bad news, I’m afraid, is lots of people died in the fire.

“There are a lot of brave firefighters and police and ambulance workers.

“And once it’s safe, they are going to go into the building.”

12 A young boy asked Mr Khan: 'How many children died? What are you going to do about it?' Credit: Getty Images

Kai, who was with mum Jade, 38, then asked: “What are you going to do with people’s life? They lost their home.”

Mr Khan told him: “We need to know they have somewhere to live.”

Kai shouted back: “I can’t hear you.”

Asked if he was satisfied with the mayor’s answers, Kai said after: “I didn’t hear them.”

12 The Mayor of London called for an interim report into the Grenfell Tower fire to be published this summer Credit: Rex Features

But a resident quickly chimed in, ­saying: “Someone needs to be held accountable. These deaths could have been prevented.”

Mr Khan praised the community for their response before a woman yelled: “We can’t say the same for authorities. We’ve seen nobody.”

Residents demanded an inquiry and emergency laws to ensure sprinklers are installed in all council tower blocks.

As frustrations boiled over one man claimed Labour leader Jeremy Corbyn had called for better fire safety and demanded the mayor apologise for not backing him.

What we know so far:

12 A woman writes 'we want answers' on a wall near the scene of the fire which destroyed the Grenfell Tower block Credit: Reuters

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12 The community's anger at a lack of help from politicians was visible in messages on the wall such as 'Theresa May stay away' Credit: AP:Associated Press

12 Theresa May only spoke to emergency workers while visiting the site of the Grenfell tower fire Credit: Getty Images

But the man was shouted down by a woman who said, “There are pressing issues, nobody cares about Jeremy Corbyn. Be quiet!”

Following the mayor’s question-and-answer session the woman shook Mr Khan’s hand, only for a man to yell: “Fed up of these politicians.

"We want action, not handshakes.”

12 Many also left emotional messages of hope and love on the wall Credit: AP:Associated Press

12 Friends and family hoping for information posted pictures of still-missing loves ones on the wall Credit: Getty Images

Channel 4 newsman Jon Snow, 69, was also cornered by an angry crowd outside the tower block.

An irate bystander told the TV veteran: “Do you want the truth?

“Right, you didn’t come here when we were telling you that the building was unsafe. That is not newsworthy. You come here when people die. Why? Why?”

12 Candles and flowers were also laid at the wall in tribute to those who lost their lives Credit: Reuters

Last night, Labour MP Mr Lammy, 44, demanded answers over the emergency response as he revealed his friend, artist Khadija Saye, 24, was among those feared dead.

Mr Lammy slammed: “We should call it what it is — it’s corporate manslaughter and there should be arrests made. It’s an outrage.

“Many of us across the country have been caught up in an election, knocking on housing estate doors, travelling up to the top floors of tower blocks and we know as politicians that the conditions in this country are unacceptable.

“We built buildings in the ’70s — many of them should be demolished.

“They haven’t got easy fire escapes, they’ve got no sprinklers, it’s totally unacceptable in Britain that people lose their lives in this way.”

The MP for Tottenham, North London, told MPs at a special Parliament session in Westminster Hall that people must be held to account.

12 A charred shell is all that is left of the 120 flat tower in West London Credit: SWNS:South West News Service

Khadija — who he described as a “dear friend and beautiful soul” — lived on the 20th floor with her mum Mary Mendy, who is thought to be in her 50s.

They were last heard of when Khadija messaged on Facebook that she was unable to get out because the smoke was too thick.

Mr Lammy said: “If the fire began at 1am, why was she communicating at 3.30am with no help at all?

“There must be a full investigation and people must be held to account.

HOW CAN YOU HELP?

Text GREN88 and amount you wish to donate to 70070, eg GREN88 £5 (you can donate £5 or £10)