1. The police shot a protester in Hong Kong, resulting in a split-screen contrast with the pageantry of China’s National Day.

As Beijing celebrated the 70th anniversary of the Communist Party’s rule with a military parade and fireworks, protesters in districts across Hong Kong engaged in some of the most violent and sustained clashes yet in their monthslong movement against Beijing’s tightening grip. The point-blank police shooting of the protester marks a turning point in the demonstrations. Our video analyzes how it happened.

The contrast almost certainly infuriated President Xi Jinping, who wanted to use the highly choreographed celebrations to portray the strength of the country.