The concept encounters broad acceptance in connection with Holocaust remembrance. In the late twentieth century, efforts to document the memories of remaining Holocaust survivors echoed the notion that preserving these facts for future generations was a way to keep Hitler and his ideas in the grave. A guide for British primary school teachers gives the concept in a guide for informing children about the Holocaust. Richard A. Cohen of the University of North Carolina at Charlotte cites it in an essay, "The Holocaust is a Christian Issue."