Thousands of people took to the streets in France and other countries again Thursday to condemn the killing of 12 people by Islamist gunmen at Paris-based satirical magazine Charlie Hebdo.

In Paris, thousands of people packed Republique square, about a kilometre from the scene of Wednesday's massacre, for a second night running.

In an America still scarred by the September 11, 2001 attacks there has been an outpouring of support for France after the attack on satirical magazine Charlie Hebdo, with countless numbers brushing up rusty French to declare: "Je suis Charlie."

The wave of compassion across the media and online social networks as well as impromptu vigils in some U.S. cities is all the more touching given that U.S.-French ties have often frayed.

France's iconic Eiffel Tower went dark late Thursday in a somber tribute to the 12 people killed in the attack on the Paris satirical newspaper Charlie Hebdo.

The lights normally illuminating the 324-meter (1,063-foot) tall monument at night went out at 8:00 pm (1900 GMT).

French satirical magazine Charlie Hebdo announced Thursday it will defy its attackers and publish a special edition with a print run of a million copies next week, as a wave of public support rose up to save it from bankruptcy.

Surviving columnist Patrick Pelloux told Agence France-Presse the magazine would bring out a "survivors' issue" next Wednesday to show that "stupidity will not win" after the attack on its headquarters which left 12 dead.

U.S. Attorney General Eric Holder will attend international terror talks convened by France in Paris on Sunday after a deadly attack on a satirical newspaper, a Justice Department official said Thursday.

"The meetings will include discussions on addressing terrorist threats, foreign fighters and countering violent extremism," the official told Agence France-Presse.

A large and growing majority of Germans believe Islam does not belong in the Western world and more than half see it as a threat, a poll published Thursday showed.

In a survey conducted in November, before Wednesday's massacre by Islamist gunmen at a French satirical paper or widespread media coverage of a new German anti-migrant movement, 61 percent of non-Muslim Germans said Islam had no place in the West.

The Islamic State group's radio praised as "heroes" Thursday the perpetrators of a deadly attack on French satirical newspaper Charlie Hebdo.

"Jihadist heroes have killed 12 journalists who worked for the French magazine Charlie Hebdo and wounded more than 10 others, to avenge the Prophet (Mohammed)," said a statement read on al-Bayan radio.

Twelve people were killed in Wednesday's jihadist attack on the French satirical magazine Charlie Hebdo -- five cartoonists, three contributors, a guest at the magazine's editorial conference and a maintenance worker.

Two policemen also died, one officer protecting the magazine's editor and another shot as the gunmen fled.

Office workers stood shoulder to shoulder, buses and metro trains halted, and the toll of bells and the sound of weeping broke the silence Thursday as France honored the 12 people massacred at Charlie Hebdo magazine.

"Charlie will be free!" cried a woman joining a crowd in front of Paris' Notre Dame cathedral a moment before noon (1100 GMT) when the country observed a national minute of silence.

The European Commission will submit new proposals to fight terrorism in the next few weeks following the deadly Islamist attack in France, Commission President Jean-Claude Juncker said Thursday.

"I know from experience that one should not react on the moment to such events given the risk of doing either too much or too little," Juncker told a press conference in the Latvian capital Riga, which has assumed the rotating EU presidency.