The “caravan” of scary South American migrants that Trump fear-mongered about back in '15 (Jesus, has it been a decade?), they were largely subsistence farmers that were forced off of their lands by multi-year droughts that were demonstrably an effect of climate change. In just the last few years, it’s almost comical how dramatically present the effects of climate change are. Whether or not we’re able to admit it to ourselves consciously, I think everyone feels it. We’re about to hit a dozen different asymptotes, and we’re clearly not ready. So, turns out, fear-mongering is a particularly successful strategy in this kind of zeitgeist.