In the global attention economy, one titan looms over all others. Donald Trump can command the gaze of the world at a click of those famously short fingers. When he stages a spectacular made-for-TV moment – say, that Oval Office showdown with Volodymyr Zelenskyy – the entire planet sits up and takes notice.

But that dominance has a curious side-effect. When Trump does something awful and eye-catching, nations tremble and markets move. But when he does something awful but unflashy, it scarcely registers. So long as there’s no jaw-dropping video, no expletive-ridden soundbite, no gimmick or stunt, it can slip by as if it hadn’t happened. Especially now that our senses are dulled through over-stimulation. These days it requires ever more shocking behaviour by the US president to prompt a reaction; we are becoming inured to him. Yet the danger he poses is as sharp as ever.

Consider the events of just the last week or so, few of them stark enough to lead global news bulletins, yet each one another step towards the erosion of democracy in and by the world’s most powerful country.

On Wednesday, Trump threatened to impose 50% tariffs – yes, he’s climbed back on that dead horse – on Brazil, if the judicial authorities there do not drop the prosecution of the country’s Trump-like former president Jair Bolsonaro, charged with seeking to overturn his 2022 election defeat and leading a coup against the man who beat him, Luiz Inácio Lula da Silva. As concisely as he could manage, Lula explained, via social media, that Brazil is a sovereign country and that an independent judiciary cannot “accept interference or instruction from anyone … No one is above the........

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