PM Trudeau, Jagmeet Singh among politicians, dignitaries and community members attending a vigil in London

Prime Minister Justin Trudeau is calling on Canadians to rally around the family and friends of a Muslim family mowed down Sunday evening in what he describes as a terrorist attack.

Trudeau told an Ottawa news conference Canadians can do many small things to counter racism.

Trudeau is expected to be among the politicians, dignitaries and community members attending a vigil in London, Ontario tonight in support of the victims of Sunday's attack.

Four members of a Muslim family were killed in what police said was a deliberate, hate-motivated attack, with a speeding pickup truck used as the weapon.

A 9 year-old boy from the same family is also in hospital.

Green party Leader Annamie Paul is calling on the Liberal government to create a national anti-Islamophobia strategy in the wake of an attack in London, Ont., that left four members of a Muslim family dead.

Paul says the Muslim community has been asking for a comprehensive national strategy that includes multiple elements including law enforcement, education and identifying those who are promoting hateful ideologies.