Prime Minister Justin Trudeau joined thousands of mourners on Tuesday (8/6) night. They gathered to commemorate three generations of Canadian Muslim families killed in planned racial crimes.

The head of London's Muslim Mosque, Bilal Rahhal, called London everyone's city. He gave a message that no party should dare to brainwash and complain between people.

"Don't let anyone make you think otherwise, just because of your skin color, beliefs, or where you were born. This is our city and we are not going anywhere," he was quoted as saying in RTHK News, Wednesday (9/6).

Four family members were the victims of a collision as they were taking an afternoon stroll near their home in London, Ontario, Sunday (6/6). Police say a man rammed the family with his pick-up truck and targeted them because of a religion.

The victims were 46-year-old Salman Afzaal, his wife Madiha Salman, 44, afzaal's 74-year-old mother, and their 15-year-old daughter Yumna Afzaal.

Their 9-year-old son, Fayez Afzaal, was in hospital with serious but not life-threatening injuries, until Tuesday (8/6) yesterday.

The offender, Nathaniel Veltman, has been charged with driving a pickup truck to the curb and crashing into the family. London is a city of more than 400,000 people located 200 km southwest of Toronto.

He was arrested the next day after the incident, a few hundred metres from London's Muslim Mosque. The mosque is often attended by afzaal families and is the location where the anniversary of their death is held.

After placing flowers on the steps of the mosque as a memorial site, pm Trudeau's mourners said his government would take action, without giving details.

"This is an evil act. But the light of the people here today, the light of afzaal family life, will always exceed the darkness," Trudeau said.

The attack by the 20-year-old man has caused a national outpouring of grief. Similar vigilance has increased in Toronto, Vancouver, and other cities across Canada.