Hong Kong is an international city. These days, we are in a global age and every country affects the other. We need to support Hong Kong because Hong Kongers hold democratic values as we do. If we let the totalitarian governments influence the world more, the democratic countries will be weaker. Therefore, we need to help Hong Kongers to come.
Second, we have 300,000 Canadians living in Hong Kong. We should care, shouldn't we?
I'll just leave those points to Reverend Tse.