PowerPoint Show by Andrew

The cry of defiance: Vast crowds rally across the world to condemn the gun massacre as Francoise Hollande declares tomorrow a day of mourning.

As darkness fell on Paris, people carrying placards, candles and French flags gathered in the Place de la Republique Protesters carried signs with words #JeSuisCharlie - I am Charlie - in support of murdered Charlie Hebdo journalists Thousands also gathered in French cities of Nice and Rennes - and outside French embassy in Berlin  Masked gunmen stormed the satirical weekly's office in the capital with AK-47s and rocket-propelled grenades Attackers reportedly were heard shouting 'Allahu akbar!' and 'the Prophet has been avenged' as they stalked building 

Protesters hold up their phones at a vigil held in Toulouse.

The steps of a public building in Lyon are lit with candles as thousands of people gather to show support for Charlie Hebdo.

Standing in support of the freedom of the press, these protesters hold an illuminated sign at a gathering in the centre of Paris.

The mood was sombre in Trafalgar Square in London as protesters with posters reading 'Je Suis Charlie' showed their solidarity with France.

Outside the EU headquarters in Brussels, Belgium, protesters held paper lanterns as they met to remember those who have died.

In a sign of support of the journalists who lost their lives today, protesters held pens, pencils and notebooks in Barcelona.

Tens of thousands of people have tonight joined peaceful rallies in support of the people killed at the massacre in central Paris.

People gather round candles and pens that have been assembled as a makeshift shrine at the Place de la Republique in Paris.

In the Place de la Republique in Paris, some of those gathered proudly carried the Tricolor - the country's national flag.

Crowds of people carrying 'Je Suis Charlie' placards met in the center of Nice, in the south of France tonight in a show of solidarity.

In a show of solidarity for their European neighbors, this group of protesters met outside the French embassy in Berlin.

Many of the protesters have adopted the slogan 'I am Charlie' in a show of support for the murdered Charlie Hebdo journalists.

Hundreds have started to gather in the Place de la Republique in the center of the capital. Similar meetings are being held in Rennes.

Protesters in Trafalgar Square, London, held up pens and notebooks in a show of support.

Hundreds of people stood in silence in Nice on Wednesday night.

'Je Suis Charlie' posters were held by many in Nice. Others waved banners with slogans such as 'Press freedom has no price'.

People paid tribute to those who died today by organizing peaceful rallies in Paris, other French cities and overseas.

The mood was sombre in Trafalgar Square, central London, as hundreds gathered in a show of solidarity.

People look on at Charlie Hebdo written in candles at Old Port of Marseille (left) and flowers are left outside the French consulate in Istanbul.

Thousands of people in the center of Lyon for a moment of silence as they pay their respects to the victims.

Members of the European Parliament, above, were among those who took to the streets of Brussels to pay tribute.

People gather at the French consulate in Barcelona.

Crowds also gathered outside the National Gallery in Trafalgar Square-London in a show of support of those murdered in Paris.

People holding makeshift banners reading Je Suis Charlie gathered outside the French embassy in Madrid.

Candles and a Je Suis Charlie mark another peaceful protest organized in Geneva, Switzerland.

French President Francoise Hollande declared tomorrow a national day of mourning.

People light candles on this wet pavement outside the French embassy in Stockholm, Sweden.

Pens and pencils are held up by demonstrators in Trafalgar Square, London.

A young boy is among those lighting a candle under large mirrored panels at an outdoor gathering in Marseille, southern France.

After London, the protest spread to other parts of the UK, with this group of people, carrying Je Suis Charlie signs, meeting in Bristol.

Standing in front of a large Christmas tree in the city centre, protesters gather in Strasbourg, eastern France to show their support.

People walk past flowers that have been laid in tribute to victims of the attack in front of the French Embassy in Copenhagen, Denmark.

Hundreds gather in front of Club de la Presse - the press club - in Montpellier, southern France, as darkness falls.

Hundreds gather in front of Club de la Presse - the press club - in Montpellier, southern France, as darkness falls.