The Wikipedia article on Charlie Hebdo reports that after the French satirical magazine Charlie Hebdo published cartoons making fun of the the prophet Mohammed, 

On 7 January 2015, two Islamist gunmen[53] forced their way into the Paris headquarters of Charlie Hebdo and opened fire, killing twelve: staff cartoonists Charb, Cabu, Honoré,Tignous and Wolinski,[54] economist Bernard Maris, editors Elsa Cayat and Mustapha Ourrad, guest Michel Renaud, maintenance worker Frédéric Boisseau and police officers Brinsolaro and Merabet, and wounding eleven, four of them seriously.

In response, many of those who saw this as an affront to free speech used the slogan “Je suis Charlie,” or “I am Charlie.” But what of the murderers? I liked what the article “Slavoj Žižek on the Charlie Hebdo massacre: Are the worst really full of passionate intensity?”(tweeted to me by John L. Davidson) had to say:  

William Butler Yeats’ “Second Coming” seems perfectly to render our present predicament: “The best lack all conviction, while the worst are full of passionate intensity.” …

However, do the terrorist fundamentalists really fit this description? What they obviously lack is a feature that is easy to discern in all authentic fundamentalists, from Tibetan Buddhists to the Amish in the US: the absence of resentment and envy, the deep indifference towards the non-believers’ way of life. If today’s so-called fundamentalists really believe they have found their way to Truth, why should they feel threatened by non-believers, why should they envy them? When a Buddhist encounters a Western hedonist, he hardly condemns. He just benevolently notes that the hedonist’s search for happiness is self-defeating. In contrast to true fundamentalists, the terrorist pseudo-fundamentalists are deeply bothered, intrigued, fascinated, by the sinful life of the non-believers. One can feel that, in fighting the sinful other, they are fighting their own temptation.

It is here that Yeats’ diagnosis falls short of the present predicament: the passionate intensity of the terrorists bears witness to a lack of true conviction. How fragile the belief of a Muslim must be if he feels threatened by a stupid caricature in a weekly satirical newspaper?