It is 70 years since senior Nazi officials met to plan the killing of European Jews.

The meeting was organised by Reinhardt Heydrich.

It took place in a villa in a prosperous suburb of Berlin.

Photo: Getty Images News.

In January 1973 abortion was legalised across the USA.

Hear from one of the young female lawyers who took the case to the Supreme Court.

Sarah Weddington had just graduated from law school when she took on the cause.

Audio archive courtesy of Oyez Project at the Chicago Kent College of Law.

On the 18 of January 1943, German soldiers began a final drive to empty the Polish capital of Jews.

It was also the day on which the first shots were fired in the Warsaw ghetto uprising.

Janina David, 12-years-old at the time, survived.

(Photo: Keystone/Getty Images)

In 1950 a Boston gang stole over $2.5m and they almost got away with it.

It took the FBI nearly six years to catch the criminals.

Thomas Richardson, the son of one of the wanted men talks to Witness.

In January 1977 President Jimmy Carter said draft dodgers could come home.

It meant that people who had fled the USA to avoid serving as soldiers in Vietnam no longer faced jail.

Michael Hendricks had gone to Montreal in Canada.

In January 1968 the country legend Johnny Cash recorded a concert in a high-security jail.

"At Folsom Prison" made Cash a crossover star, and helped get through a difficult period in his personal life.

Witness hears from Johnny Cash experts and from his drummer, WS Fluke Holland.

Photo: Hulton Archive/Getty Images.

In January 1991 the UN Secretary General tried to stop the first Gulf War.

He made a last minute trip to Baghdad to try to persuade Saddam Hussein to withdraw Iraqi troops from Kuwait.

Photo: VT Freeze Frame

In 1898 the novelist Emile Zola took up the cause of the imprisoned Jewish army officer - Alfred Dreyfus.

He began by publishing an open letter to the French President under the title J'accuse.

Photo of Dreyfus at his court-martial. Getty Images/Hulton Archive.

When the Japanese Emperor died in 1989 it marked the end of an era.

He had been on the throne when Japan joined World War II.

He had announced its eventual surrender.

And he had ruled throughout its post-war economic transformation.

Photo: Press Association

Over 2000 years ago Julius Caesar made a decision which changed European history.

That decision to cross a river and lead his army towards Rome was a point of no return for the ambitious governor of Gaul.