In February 1965, the controversial black leader, Malcolm X, was assassinated in Harlem, New York.

Witness speaks to a supporter of Malcolm X who saw the killing.

When democratic elections were held in Nicaragua in 1990, many observers expected the Sandinistas to win easily.

But they were defeated by a right-wing coalition led by Violeta Chamorro.

Her son talks to Witness about the difficulties her candidacy presented to the family.

Before 1956, Josef Stalin had always been portrayed as a hero of the Soviet Union.

Then, in a secret speech to a Communist Party conference, his successor, Nikita Khrushchev, denounced him as a brutal and paranoid tryant.

Witness hears from Russians who remember the speech and the shock it caused.

In 1986, thousands of peaceful demonstrators took to the streets of the Philippine capital, Manila.

Just days later, President Ferdinand Marcos was forced from power.

For Witness, the leading Philippine novelist, Jose Dalisay, recalls the demonstrations.

Rioting in Algeria in October 1988 killed around 500 people and started a period of political turmoil. A short-lived experiment in democracy ended in a violent civil war between Islamists and the Algerian army. A state of emergency remains in force until today. Witness speaks to a foreign journalist and an Algerian student who both experienced a turning point in the country's history.

(Photo: Algiers citizens help to clean up the main avenue of the Belcourt area in Algiers 08 October 1988 after three days of rioting.)

When the son of aviator Charles Lindbergh disappeared it was assumed he had been kidnapped.

Two months later on 12 May the child's badly decomposed body was found less than five miles (8 km) from the Lindbergh's home.

An autopsy found that he had been killed by a blow to the head shortly after the kidnapping.

It was one of the biggest stories in the US in the years before World War II.

The creation of a cloned sheep had massive implications for the worlds of science and medicine.

Sir Ian Wilmut led the team which created Dolly and describes what she was like and why did she died after only seven years.

In February 1779 the great British explorer Captain Cook was beaten to death in Hawaii.

For several weeks, he and his men had been staying quite peacefully on the island. So what happened to change his relationship with the local people?

Simon Watts looks back on Captain Cook's last days.

The fall of Singapore was one of the most serious losses suffered by the Allies during World War II. One British survivor of that battle tells his story.

The former Lebanese Prime Minister, Rafik Hariri, was driving through central Beirut when a remote-controlled bomb was detonated under his armour-plated car. 22 other people were killed in the attack.