Expressions of ‘eco-fascism’ are said to entail ethnonationalist actors advocating extreme population control measures, and accelerationists hastening the collapse of societies worldwide. These expressions emerge from political-ideological environments in which Global North actors have erroneously assigned blame for climate change with the Global South, through rhetoric about migration, population control and fossil fuel usage. To assess the influence of these themes in the development of eco-fascist ideologies online, this paper presents insights from a mixed-methods analysis of climate change discussions on Stormfront; the first dedicated online white nationalist media platform still drawing cross-national participation and viewership from generalized public audiences.