The "Great Replacement" theory is a key ideological component of Identitarianism, a strand of white nationalism that originated in France and has since gained popularity in Europe and the rest of the Western world. It was also the name of a manifesto by terrorist Brenton Harrison Tarrant, the Australian-born perpetrator of the Christchurch mosque shootings at Al Noor Mosque and Linwood Islamic Centre in Christchurch, New Zealand, that killed 51 people and injured 50 others. Likewise, the manifesto of Brenton Harrison Tarrant and the Great Replacement theory were also cited in "The Inconvenient Truth" by Patrick Crusius, the perpetrator of the 2019 El Paso shooting at a Walmart store in El Paso, Texas, United States, that killed 22 people and injured 24 others.