Over the last decade, Europe’s political establishment has pursued an agenda of mass immigration while neglecting the welfare of its own citizens. The European Right has either contributed to this failure or warned, with varying degrees of success, against unchecked migration and the erosion of national sovereignty. In recent weeks, the consequences of these policies have been on display in the streets of Paris, Milan, and other cities across Europe.

Though the unrest in France emerged largely amid grievances over the rising cost of living, deteriorating public services, and underfunded schools, the demonstrations quickly gave way to violence. Immigrants, Islamists, and organized radical-left activists are committing arson, looting, attacking the police, and breaking into buildings. This domestic terrorism, which is occurring in some of Europe’s most beautiful cities, is a unique evil, perpetrated by those united in hatred of their neighbors and their countries’ heritage. These revolutionary movements are not seeking to reform policy or institutions, but to delegitimize the very civilization those institutions embody.

For years, European political elites have welcomed unchecked immigration and social disorder. Young Europeans, particularly those in Western Europe, have come of age living under institutions that repeatedly fail to provide the security, opportunity, and public services they were promised.

If the violent and disturbing consequences of the past weeks prove anything, it is that Europe’s Right must unite around remigration as its central political objective. Decisive action is particularly needed, because violence is bound to worsen in the coming months and years if the situation continues.