She added: "Today we come together, as we have done before, to condemn this act and to state once again that hatred and evil of this kind will never succeed".
The media was also criticized for being slow to call the incident a terror attack. "We will stay a strong city", the mayor said.
Holding up a banner with the message "No To Islamophobia", protesters shouted "shame on you" and "you've got blood in your hands" as May was leaving the Finsbury Park mosque.
The van driver was wrestled to the ground by passers-by after he had careered, reportedly smiling, through a crowd of pedestrians, including a man in a wheelchair.
Locals then pounced on the driver and pinned him down while waiting for the police to arrive.
As of mid-Monday morning, U.S. President Donald Trump has yet to respond, via his prolific Twitter account or by any other means, since a man slammed his auto into a crowd of Muslim worshipers just after midnight. The Independent reported that Theresa May finally met the victims' families on Sunday at Downing Street.
Shortly after midnight, the hired vehicle swerved into a group of people leaving prayers at the Finsbury Park Mosque, one of the biggest in the country, witnesses said.
A man arrested for allegedly driving a van into worshippers gathered outside a London mosque has been named as Darren Osborne, a 47-year-old from the Cardiff area.
Locals held onto the suspect until he was detained by police and later arrested on charges of "the commission, preparation or instigation of terrorism including murder and attempted murder".
Still, Muslim advocacy groups say they see a stark difference in the haste with which Trump responds when Muslims are the perpetrators of attacks, and not the targets. "There were at least two others who looked to be in a very bad way", he added.
"Don't be afraid and don't generalise or stereotype, and know that just as [London Bridge and Manchester] attackers do not represent Islam, this man too does not represent all White people - although we still do not know where he was from", Mahmoud said.
Pauline Tibbs, 48, said: "The police have been back and forward here all day". "I didn't see the attacker himself, although he seems to have been arrested, but I did see the van". Despite what the Fox News addicted President wants to believe, not all Muslims are terrorists.
One man died at the scene, although he had been receiving first aid at the time of the incident and it wasn't clear if he died as a result of the attack or from something else.
Mahmoud further praised the response of the Metropolitan police, saying that they were "brilliant" and were very "understanding and restrained in dealing with the angry crowd".
"At this stage there are no reports of any persons having suffered any knife injuries".
Sarah Mushtaq said attacks like what happened in London can create some fear within the Muslim community in Windsor.
Opposition Labour leader Jeremy Corbyn, who is an MP from the area, visited the area and said: "Im totally shocked at the incident at Finsbury Park tonight".
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