en CB01 OFFICIAL. As the 'one country two systems' policy in Hong Kong has slowly eroded, resentment among the territory's citizens has steadily grown. What began as a series of spontaneous protests against an extradition law in March 2019 has now escalated in to a full-blown popular uprising that shows no signs of abating. ABC Four Corners reports from the frontline of the action, capturing extraordinary footage of the growing tension and violence.