Most people had never heard of the great replacement lie until Charlottesville, when bigots with torches chanted, “You will not replace us, Jews will not replace us.”
This once-fringe conspiracy theory is now central to GOP speeches, ads and campaigns: https://americasvoice.org/blog/new-data-reveals-staggering-increase-in-gops-use-of-white-nationalist-invasion-and-replacement-conspiracy-rhetoric/