On August 28

A mass shooting took place in Phoenix, Arizona, leaving 33 dead and five others injured.

The second phase of the Thomson-East Coast MRT line was opened for service.

The NASA spacecraft Galileo flew by the asteroid 243 Ida and took photographs that later revealed the first known asteroid moon (both pictured).

Construction began on the Ryugyong Hotel (pictured) in Pyongyang, the tallest building in North Korea.

Swedish police used gas bombs to end a seven-day hostage situation in Stockholm; the hostages had bonded with their captors during the incident, leading to the term Stockholm syndrome.

American civil-rights leader Martin Luther King Jr. delivered the speech "I Have a Dream" during the March on Washington, calling for civil and economic rights and an end to racism in the United States.

African-American teenager Emmett Till was lynched near Money, Mississippi, for allegedly flirting with a white woman, energizing the nascent American civil rights movement.

American tennis player Althea Gibson became the first African-American woman to compete at the U.S. National Championships.

A confrontation at Blargies prison camp in France led to a charge of mutiny for New Zealand private John Braithwaite, for which he was later executed.

The 1909 Monterrey hurricane dissipated; one of the deadliest Atlantic tropical cyclones on record, it killed an estimated 4,000 people throughout Mexico.

Tom Thumb (replica pictured), the first American-built steam locomotive, took part in an impromptu race against a horse-drawn car in Maryland.

William Herschel discovered Enceladus, a moon of Saturn, during the first use of his new telescope which was then the largest in the world.

Bishops' Wars: Scottish Covenanter forces led by Alexander Leslie defeated the English army near Newburn, England.

Ferdinand II, King of Bohemia and Hungary, was unanimously elected Holy Roman Emperor.

Ottoman–Portuguese conflicts: During the Battle of Wofla, the Portuguese commander Cristóvão da Gama was captured by the Adal Sultanate and executed the next day.

Orestes took control of Ravenna, the capital of the Western Roman Empire, forcing Emperor Julius Nepos to flee.