Hong Kongers in Canada are banding together to help the latest wave of immigrants fleeing Beijing's tightening grip on their city.

Networks across the country, some descended from groups set up after China's crackdown on Tiananmen Square protesters in 1989, are offering new arrivals everything from jobs and accommodation to legal and mental health services and even car rides to the grocery store.

"We are in a battle. These are my comrades, people who share the same values," said one 38-year-old who asked to be identified only as Ho. "Who is going to provide that helping hand if I'm not going to?"