Scotland Yard relented at the eleventh hour following their decision to deny Donald Trump protesters permission to sound on their scheduled march in London.
The organizers had vowed to take legal action against the Metropolitan Police after being banned from using a stage and sound system for the demonstration on Friday, due to concerns over public safety.
But late Thursday night event organizer Michael Chessum tweeted to say that the troupe had resigned and allowed the use of a "Major PA System". He said the Met said in an email, "We felt compelled to do so because of the extent of media coverage."
The organizers of the Friday Trump rally said that the Met had suddenly refused permission to set up a stage two days before its "peaceful and family-friendly" protest, a move they said they did during demonstrations they had previously held had been unprecedented.
Earlier Thursday, Chessum said the police had refused to meet the organizers and a letter had been sent to the Met about possible legal action.
"The police knew in advance that we intend to organize a protest," Chessum said. "After two days, they have cleared the approval for this phase and effectively for a sound system because they said that no vehicle can get near the area."
The Met made a statement stating that last week the organizers had signed a memorandum to take a vehicle platform to Portland Place, where the march should begin before demonstrators drive along Regent Street to Trafalgar Square. "As usual, the Met has asked the organizers for a management and safety plan, for which they have overall responsibility as organizers," it said. "The Met got diagrams of where the vehicle should be positioned without stewarding being mentioned for that particular aspect of the event."
Chessum said the statement was "ridiculous". He said, "They never asked us for a stage stewarding plan, we could have provided that easily, we have a big stewarding operation in place.
"You have a point to the extent that a stage is a static object that can be massively thumped, but with regard to preventing nasty mass situations, as a steward I can come on a stage, I can have a lookout point can guide the crowd and communicate with them.If there is an emergency, I can use the big PA system. "
Part of the right to freedom of expression and assembly, Chessum said, "The police and the state can not impose a totally arbitrary and unreasonable restriction on a protest, and that is what this is about."
"I have organized many protests over the years, and I was chief steward on most student demonstrations in 2010. I do not think I've ever seen the police so nervous and unreasonable," he added.
On late Thursday night, Chessum posted his update on Twitter, saying that the police had "gone back" and allowed the use of a PA system.
Ravi Naik of ITN Solicitors, who had been instructed to challenge the Met's decision and sent a preparatory letter to the troop, said Thursday night he was glad the Met had changed their attitude.
More than 60,000 people announced on Friday to participate in the march in central London. It is expected that another 10,000 people will participate in a separate women march along the same route earlier in the day.
On Thursday, demonstrators gathered in front of US Ambassador Regent's Park residence, Winfield House, where Trump was to stay.
Protesters holding placards, drums, bells, and even pots, sieves, and metal spoons were held in check by a large metal fence built specifically for the President's visit.
Songs contain "Hey Trump, what do you say, how many children did you take today?" Regarding his imprisonment and separation of migrants from their children on the Mexican border. Others shouted, "Say it out loud, say it clear, Donald Trump is not welcome here," or just "Fuck Trump."
Retired teacher Dianne Ward, 66, and her husband, John, also 66, arrived from Leeds to join the protest.
She said, "It breaks my heart that there are children who have been separated from their parents – whatever the rights or wrongs are – you just can not do that, that was the key point for me to come down and Position. "
Simon Katz, 51, from London, was also motivated by the "inexcusable" policy of separating children and parents. He said, "We should be tough on Trump, he is an embodiment of the perversion of the truth and must be challenged."
American student Madeleine Richardson Graham, 20, of Philadelphia, said she considers the protests "amazing." She said, "Everything Trump does is up against me or somebody I know, it's so horrible how he represents us on the world stage, and I think that's a great welcome."
The organizers said the Friday protest was family friendly and peaceful.
But the US embassy warned Americans in the United Kingdom that Trump's visit would be "unobtrusive" due to fears that demonstrations could become violent. "Be aware of your surroundings [and] To be cautious when unexpectedly near large gatherings that could become violent, "warned the embassy.
The Met was unable to comment on the PA system late Thursday evening.
Police severely curtailed Saturday's protests in support of Trump and imprisoned right-wing extremist Tommy Robinson to prevent "serious rioting." A "Welcome Trump" rally is expected to begin at the US embassy in London and go to Whitehall, where she will participate in a "Free Tommy Robinson" rally. A counter-demonstration was also restricted.
The Met said it imposed restrictions under the "Public Order Act 1996" after violence was perpetrated last month in a Pro Robinson incident that left five officers injured and nine arrested. Some Robinson defenders who founded the English Defense League were seen greeting the Nazis and throwing metal barriers, bottles and other items at the police.