In 1996 over a thousand prisoners were killed at Abu Salim jail in Tripoli.

Many people see the killings as the spark that eventually led to the uprising against Colonel Gaddafi's government.

When protestors first went on the streets of Benghazi in February this year it was to demonstrate against the arrest of a lawyer who was investigating the killings.

Photo: AP

It is 10 years since protests against a G8 summit turned violent on the streets of Genoa, Italy.

Many police and demonstrators were injured - and one protestor was killed.

Bill Hayton covered the events for the BBC - he talks to a campaigning journalist who was badly beaten by police.

Rupert Murdoch's career in the media began in the Australian town of Adelaide in the early 1950s.

From there, he went on to build one of the largest media empires in the world.

In July 1967 British cyclist Tom Simpson, rode himself to death on the Tour de France.

His team-mate talks to Witness about Tom and the Tour.

This programme was first broadcast in 2010.

In July 1955 the first ever Disney theme park was opened in California.

The opening day wasn't entirely successful.

We hear from two people who were there. One a Disney employee, the other, a seven year old boy.

A graphic account of one of the major events in the history of the Middle East.

The conquest of Jerusalem by the Crusaders more than 900 years ago.

Through the BBC's Archive footage Alan Johnston pieces together the story of a Battle of Britain fighter pilot who was shot down during a dogfight and badly burnt before parachuting from his stricken aircraft.

We hear how Richard Hillary then had to prepare to die as he drifted for hours in the North Sea.

Photo: Press Association

In July 1995, Bosnian Serb fighters killed thousands of Muslim men and boys.

They had taken refuge in the UN 'safe area' of Srebrenica - but peacekeepers there were unable to protect them.

Wim Dijkema (right) was one of the Dutch soldiers in the town at the time.

In 1989, the people of Liverpool began boycotting Rupert Murdoch's Sun newspaper over its reporting of the Hillsborough football disaster.

The Sun later apologised, but sales in the city have never recovered.

Witness speaks to a Liverpudlian involved in the boycott, and to a local radio journalist who remembers the city's anger.

PHOTO: Press Association

It is more than 30 years since the launch of the first space shuttle.

Milton Silveira has been involved in the programme since the very beginning - long before the first shuttle ever took off.

He talks to Witness.