The wrapping of ecological disaster with fears of rampant immigration is a narrative that has flourished in far-right fringe movements in Europe and the US.
The best hope in the short term is for a popular front to browbeat the middling centrists who claim to "believe science" into actually acting on it, and beating back the illiberal right accordingly.
While eco-fascists violently oppose contemporary environmentalists, they often appropriate ideas such as populationism from the past of the environmental movement.
Keeping our societies united and tolerant in the face of the pressures created by the climate crisis is an integral part of the global fight for climate justice, but governments, policymakers and NGOs are not yet ready for this challenge.