Protests in Santiago that started 11 days prior escalated into open battle against the Chilean national police, forcing President Sebastián Piñera to declare a state of emergency.
At the Summer Olympics in Mexico City, American athlete Bob Beamon (pictured) achieved a distance of 8.90 m (29.2 ft) in the long jump event, setting a world record that stood for 23 years.
American Revolutionary War: In an act of retaliation against ports that supported Patriot activities in the early stages of the war, the Royal Navy destroyed what is now Portland, Maine.