The Charlie Hebdo Massacre in Paris

The brutal terrorist attack on the French satirical weekly Charlie Hebdo in Paris on Wednesday has badly shaken France. But the French have reacted with a fierce determination to defend their freedoms. President François Hollande, speaking from outside the magazine’s office a couple of hours after the murders, was crystal clear: This was an assault, he said, on “the expression of freedom” that is the “spirit of the republic.”

Two heavily armed attackers, who apparently knew the magazine’s staff would be gathered around a table late on Wednesday morning for a weekly editorial meeting, forced themselves into Charlie Hebdo’s office and shot 10 people dead. Two policemen were also killed. At least 11 other victims were wounded. The gunmen then fled with a third accomplice in a waiting car, and remain at large.

The editors, journalists and cartoonists of Charlie Hebdo reveled in controversy and relished hitting nerves. The magazine’s editorial director, Stéphane Charbonnier, who was killed in the attack, had scoffed at any suggestion the magazine should tone down its trademark satire to appease anyone. For him, free expression was nothing without the right to offend. And Charlie Hebdo has been an equal-opportunity offender: Muslims, Jews and Christians — not to mention politicians of all stripes — have been targets of buffoonish, vulgar caricatures and cartoons that push every hot button with glee.

In 2006, Charlie Hebdo reprinted controversial cartoons of the Prophet Muhammad that originally appeared in a Danish newspaper. In 2011, the magazine’s offices were firebombed the day after it published a special ”Sharia Hebdo” issue guest-edited, it said, by Muhammad. The cover of Wednesday’s issue poked fun at the French novelist Michel Houellebecq, whose newest book imagines France as an Islamic state in the year 2022.

There are some who will say that Charlie Hebdo tempted the ire of Islamists one too many times, as if coldblooded murder is the price to pay for putting out a magazine. The massacre was motivated by hate. It is absurd to suggest that the way to avoid terrorist attacks is to let the terrorists dictate standards in a democracy.

This is also no time for peddlers of xenophobia to try to smear all Muslims with a terrorist brush. It is a shame that Marine Le Pen, leader of the National Front party, which has made political gains stoking anti-immigrant and anti-Muslim fears, immediately sought political advantage with talk of “denial and hypocrisy” about “Islamic fundamentalism.”

President Hollande has wisely appealed for national unity. His sentiments were echoed by the former president Nicolas Sarkozy, who asked the French to avoid the temptation to “lump together” terrorists with Muslims, and urged them to present a united front against terrorism. Dalil Boubakeur, the rector of the Grand Mosque in Paris, expressed his community’s anguish over Wednesday’s shocking attack. He did not mince words: “This is a deafening declaration of war,” he said.

Just days after the 9/11 attacks, an editorial in the newspaper Le Monde declared: “We are all Americans.” In France, “Je suis Charlie” — “I am Charlie” — has gone viral as the words to show solidarity with the victims at Charlie Hebdo. This attack was an assault on freedom everywhere. On Wednesday, the American Embassy in Paris put that message on its social media accounts.