This weekend, Hong Kongers head to the polls to elect their government. Well, to elect 20 of the 90 seats in their Legislative Council – and from a roster of candidates carefully vetted by the Communist Party of China in Beijing.The Globe’s Asia correspondent James Griffiths tells us how Hong Kong’s normally boisterous election has been quieted by the new national security law, and why it’s still going ahead despite critics calling it a sham.