2008 Shenzhen anti-police riot
The Shenzhen anti-police riot began in Shenzhen, People's Republic of China, on November 7, 2008, when a policeman threw a walkie talkie at a speeding motorcyclist, causing the driver to lose control of his bike. The driver then crashed into a lamp post and died a few hours later.
Source: Wikipedia — 2008 Shenzhen anti-police riot (CC BY-SA 4.0)