RNA - The rally organized by Stand Up to Racism platform was also attended by Muslim NGOs and other anti-racist groups in the wake of the terror attacks that killed scores of people in mosques in New Zealand, Anadolu news agency reported.
The rally, originally planned on the occasion of UN International Day for the Elimination of Racial Discrimination, saw more than 10,000 people march from Hyde Park to government offices located in Downing Street.
The protesters gave messages of solidarity with Muslims following Friday terror attack in Christchurch, New Zealand.
The organizers announced that in a web statement that "the horrific terrorist attack on a mosque in Christchurch has shocked the world and further raised the alarm of far-right terrorism".
"As we march for UN Anti-Racism Day against racism, Islamophobia, antisemitism and fascism, we will stop at the New Zealand High Commission to send our thoughts to those affected by the attack and pledge to unite all communities against hatred and division," the statement said prior to the march.
"Christchurch, Never Again," demonstrators shouted.
At least 50 people were killed when a gunman opened fire on worshippers during Friday prayers at the Al Noor and Linwood mosques.
Mosques across the UK were strewn with flowers in a show of solidarity with Muslims in the wake of deadly terror attacks in New Zealand.