At the same time, fresh in our minds are searingly awful images of children locked into cages, screaming for their parents, languishing at the mercy of a brutal border regime. Mere weeks before the U.K. Government rolled out the red carpet and began to prepare our carnival of resistance, Trump gave us another harrowing reminder that he’s one of the most dangerous people in the world, that the consequences of his actions are deadly serious, and that Trumpism puts the entire planet in jeopardy.

Take climate change—Trump’s climate denial isn’t just rhetoric. It manifests itself on an almost daily basis. In the last week or so alone, we’ve seen him ask Saudi Arabia to ramp up its oil output to double the market’s expectations, while he halves U.S. climate funding to the developing world. And of course, actions like this are set against the backdrop of Trump pulling the U.S. out of the Paris Agreement this time last year—an early confirmation of his attitude towards the threat of ecological collapse.

The stakes are impossibly high. That’s why it’s vital that our resistance of Trump isn’t restricted to one day of protest, spectacular as it looks likely to be.