Last week, the Chinese government made the latest and perhaps the most serious move yet to crack down on Hong Kong's semi-autonomy. It's just the latest such effort by Beijing in the decades-long tensions between China and Hong Kong and it seems to take advantage of the quarantine calm that has subdued months of protests. But when did these tensions begin and what have Hong Kongers been fighting for?Learn more about sponsor message choices: podcastchoices.com/adchoices)NPR Privacy Policy)