28 August 1874

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.

Phoenix shooting: A man opens fire on pedestrians outside of a hotel in Phoenix, Arizona, resulting in the deaths of three people, including the perpetrator.

China–India border standoff: China and India both pull their troops out of Doklam, putting an end to a two-month-long stalemate over China's construction of a road in disputed territory.

The first experimental mission of ISRO's Scramjet Engine towards the realisation of an Air Breathing Propulsion System is successfully conducted from Satish Dhawan Space Centre SHAR, Sriharikota.

NASA's Space Shuttle Discovery launches on STS-128.

In "one of the most complicated and bizarre crimes in the annals of the FBI", Brian Wells dies after becoming involved in a complex plot involving a bank robbery, a scavenger hunt, and a homemade explosive device.

The Russian space mission Soyuz TM-29 reaches completion, ending nearly 10 years of continuous occupation on the space station Mir as it approaches the end of its life.

Pakistan's National Assembly passes a constitutional amendment to make the "Qur'an and Sunnah" the "supreme law" but the bill is defeated in the Senate.

Second Congo War: Loyalist troops backed by Angolan and Zimbabwean forces repulse the RCD and Rwandan offensive on Kinshasa.

Chicago Seven defendant David Dellinger, antiwar activist Bradford Lyttle, Civil Rights Movement historian Randy Kryn, and eight others are arrested by the Federal Protective Service while protesting in a demonstration at the Kluczynski Federal Building in downtown Chicago during that year's Democratic National Convention.