Police vehicles are seen during a motorcade in Surrey, Canada, April 30, 2020. A memorial motorcade of first responders was held on Thursday in Surrey of Canada to honor the victims of the deadly Nova Scotia mass shooting. (Photos: Xinhua)

Police vehicles pass by a Royal Canadian Mounted Police (RCMP) officer during a motorcade in Surrey, Canada, April 30, 2020. A memorial motorcade of first responders was held on Thursday in Surrey of Canada to honor the victims of the deadly Nova Scotia mass shooting.

Flowers and a photo of a fallen police officer are seen in front of the Fallen Peace Officers Memorial Monument at Royal Canadian Mounted Police (RCMP) Headquarters in Surrey, Canada, April 30, 2020. A memorial motorcade of first responders was held on Thursday in Surrey of Canada to honor the victims of the deadly Nova Scotia mass shooting.

People holding signs watch a motorcade at Royal Canadian Mounted Police (RCMP) Headquarters in Surrey, Canada, April 30, 2020. A memorial motorcade of first responders was held on Thursday in Surrey of Canada to honor the victims of the deadly Nova Scotia mass shooting.

Police vehicles pass by Royal Canadian Mounted Police (RCMP) officers during a motorcade in Surrey, Canada, April 30, 2020. A memorial motorcade of first responders was held on Thursday in Surrey of Canada to honor the victims of the deadly Nova Scotia mass shooting.

A police vehicle passes by a Royal Canadian Mounted Police (RCMP) officer during a motorcade in Surrey, Canada, April 30, 2020. A memorial motorcade of first responders was held on Thursday in Surrey of Canada to honor the victims of the deadly Nova Scotia mass shooting.

Police officers take part in a motorcade at Royal Canadian Mounted Police (RCMP) Headquarters in Surrey, Canada, April 30, 2020. A memorial motorcade of first responders was held on Thursday in Surrey of Canada to honor the victims of the deadly Nova Scotia mass shooting.