The "Great Replacement" narrative, which imagines that historic white majorities are being intentionally replaced through immigration policies crafted by global elites, has effectively mobilized racist, nationalist, and nativist movements in the United States and Europe. The Rage of Replacement tracks how this narrative has shaped the politics and worldview of the far right, binding its various camps into a community of rage obsessed with nostalgia for a white-supremacist past.

Showing how the replacement narrative has found significant purchase in recent mainstream discourse, Michael Feola diagnoses the dangers this racist theory poses as it shapes the far-right imagination, expands through civil society, and deforms political culture. In particular, he tracks how the replacement narrative has given rise to malignant political strategies designed to "take back" the nation from its perceived enemies—by force if deemed necessary.

Feola shows how it has motivated a variety of dangerous political projects in pursuit of illiberal, antidemocratic futures. From calls for the creation of segregated white ethnostates to extremist violence such as the mass shootings in Christchurch, El Paso, and Buffalo, The Rage of Replacement makes clear that replacement theory poses a dire threat to democracy and safety.