We all know the traditional routine that follows an Islamist terror attack: momentary shock, then platitudinous disapproval, then condemnation of Western foreign policy, then hand-wringing about an imagined Islamophobic backlash. We’ve seen it again and again, even following such abominations as the murder of Theo Van Gogh in Amsterdam in 2004 and the London Tube bombings in 2005.

But not this time. Something in Europe has changed — changed utterly. A decade ago, Trafalgar Square was filled with Muslims complaining about the Danish cartoons of the Prophet Mohammed — not, to be clear, about the assassination attempts they had triggered, but about the cartoons themselves. This time, crowds in the same place, including many Muslims, held pencils and “Je Suis Charlie” signs.