Tarrant and Crusius seriously believe Earth, and cherished environs thereon, are being terminally degraded by overpopulation. Groups spreading such absurd beliefs bear some responsibility for Tarrant's and Crusius's actions.
The El Paso and Christchurch Shootings: The Ecofascist Connection
On March 15, 2019, 28-year-old Brenton Tarrant attacked a mosque and Islamic centre in Christchurch, New Zealand with a semi-automatic rifle; killing 51 and injuring 50.
On August 3, 2019, 21-year-old Patrick Crusius attacked a WalMart crowded with Latino shoppers in El Paso, Texas with a semi-automatic rifle; killing 22, injuring 24.