On This Day in History

The controversial Broadway musical Hair, a product of the counterculture of the 1960s, opened, with its songs becoming anthems of the anti-Vietnam War movement.

Vietnam War: South Vietnamese forces began the Cambodian campaign, aiming to attack North Vietnamese jungle bases.

Vietnam War: North Vietnam concluded its East Sea Campaign by capturing all of the Spratly Islands held by South Vietnam.

A powerful tropical cyclone struck Chittagong, Bangladesh, killing at least 138,000 people and leaving up to 10 million homeless across the region.

The acquittal of policemen who had beaten African-American motorist Rodney King sparked six days of civil unrest in Los Angeles (damage pictured), during which 63 people were killed.

Before a crowd of about 165,000 at the Rungrado 1st of May Stadium, Ric Flair and Antonio Inoki competed in the main event of Collision in Korea, the highest attended professional wrestling event of all time.

The Chemical Weapons Convention entered into force, outlawing the production, stockpiling and use of chemical weapons in the 87 countries that had ratified the convention.

Cyclone Mala made landfall near Thandwe, Myanmar, causing 37 deaths.

Watched by a worldwide television audience of tens of millions, Prince William and Catherine Middleton were married at Westminster Abbey in London.

The ringleaders of the Bali Nine were executed in Indonesia for attempting to smuggle 8.3 kg (18 lb) of heroin to Australia in 2005.