The murder of some 127 innocents in Paris by a jihadi gang on Friday has again shocked the French and led to another round of solidarity, soul searching, and anger. In the end, however, Islamist violence against Westerners boils down to two questions: How much will this latest atrocity turn public opinion? And how much will it further spur the Establishment to deny reality?As these questions suggest, the people and the professionals are moving in opposite directions, the former to the right, the latter to the left. In the end, this clash much reduces the impact of such events on...