Merseyside Police knows – better than any force, perhaps – that in a social media age, an information vacuum can become a misinformation cauldron.
They have learnt from the aftermath of the Southport stabbing attack, where the force was criticised for being too slow to release information that could have calmed the riots that followed.
So, it feels like things have been done differently this time.
Liverpool parade latest: Nearly 50 injured in car ramming
Police tents surrounded by debris at the scene in Water Street. Pic: PA
The incident happened just after 6pm on Monday.
Videos – captured by fans on their phones – were online within moments. Shared and speculated upon, with guesses as to the attacker’s identity and motive.
But alongside the huge and immediate police investigation, the communication machine moved equally fast.
Within a few hours, police released a description of the man they had arrested – a 53-year-old white British man from the Liverpool area.
Please use Chrome browser for a more accessible video player
Moment car drives into crowds in Liverpool
A few hours after that, we had an extensive press conference during which police ruled out terrorism as a motive.
Again, they appealed for videos not to be shared online and for people not to speculate.
Liverpool City Region Mayor Steve Rotheram said Merseyside Police “handled the situation fantastically” given how quickly footage of the incident was shared online.
Please use Chrome browser for a more accessible video player
Liverpool mayor: ‘We’ll come together’
He told Sky News that online misinformation can set “a lot of false narrative”.
The mayor added: “And we all know that speculation and social media are a wildfire of different vantages, and some of it is for nefarious reasons.
“So, it was right, of course, that the police reacted as quickly as they did to dampen down some of the types of posts that we were witnessing, you know, saying that there were other things happening throughout the city.”
Please use Chrome browser for a more accessible video player
‘These were utterly tragic scenes’
Read more:
What we know so far
Eyewitnesses describe shock and sadness
Police commentator Graham Wettone also told Sky News the force had done well to quickly combat misinformation spreading online.
He said: “That’s always a problem in today’s day and age, social media taking over so much news reporting, with so many people as well present at the scene where that awful incident took place, mobile phones out, people recording it, and then posting it almost straight away.”
Dal Babu, a former Metropolitan Police chief superintendent, also highlighted it was “unprecedented” that the force “very quickly” gave the ethnicity and race of the suspect.
Speaking to BBC Radio 5 Live, he said: “I think that was to dampen down some of the speculation from the far-right that sort of continues on X even as we speak that this was a Muslim extremist and there’s a conspiracy theory.”
Mr Babu agreed that Merseyside Police appears to have learned lessons from what happened after the Southport stabbings.
He added: “The difficulty we have is in the olden days, when I was policing, you would have a conversation with trusty journalists, print journalists, radio journalists, broadcasting journalists, you’d have a conversation and say look can you please hold fire on sharing this information and people would listen.
“We don’t have that with social media, it’s like the Wild West and anything goes and so puts the police in a very, very difficult position.”
Meanwhile, the police investigation continues.
In central Liverpool, Water Street is cordoned off with police officers and vehicles in place.
Flags, sprays of paint flares and empty bottles still cover the road. Whereas they have been cleared elsewhere along the parade route, here they remain. Chilling symbols of the party, that within moments became a scene of utter horror.
