The Koza riot was a violent and spontaneous protest against the US military presence in Okinawa, which occurred on the night of December 20, 1970, into the morning of the following day. Roughly 5,000 Okinawans clashed with roughly 700 American MPs in an event which has been regarded as symbolic of Okinawan anger against 25 years of US military occupation. In the riot, approximately 60 Americans and 27 Okinawans were injured, 80 cars were burned, and several buildings on Kadena Air Base were destroyed or heavily damaged.