For over two weeks, Americans have been viewing scenes of chaos and carnage, as the French children of North African immigrants have rampaged through French towns with sticks, rocks, and Molotov cocktails. Aside from a frisson of well-deserved schadenfreude, what does this upheaval tell us? As many pundits have suggested, maybe the French don’t understand multiculturalism. As the kids would say nowadays, "Duh." What other country actually has an agency to preserve the purity of language, like the Academie Francaise? Or a Culture Ministry that issues edicts banning the use of the “foreign” word “e-mail” in French government emails. To...