The march towards the darkness is becoming a sprint. In the US, warnings about the autocratic ambitions of Donald Trump that were once dismissed as hyperbole and hysteria now seem, if anything, too mild. Faster than most imagined, he has moved to weaken institutional checks on his power – whether the courts, the universities, the civil service or the press – and now has set to work gagging his critics, even, it seems, to outlaw large swathes of the opposition.

This week saw the suspension by a major broadcasting network, Disney-owned ABC, of a late-night talkshow, Jimmy Kimmel Live!, following remarks Kimmel had made about the killing of the rightwing activist Charlie Kirk. Kimmel did not criticise Kirk himself – an act now considered all but blasphemous in the US – but rather Republicans’ reaction to his murder, especially their eagerness to “score political points from it”.

That was enough to prompt Brendan Carr, the Trump-appointed chair of the Federal Communications Commission – the body that grants, or revokes, licences to broadcast – to come on like a wannabe Tony Soprano, all but cracking his knuckles as he said: “We can do this the easy way or the hard way.” The threat worked: Kimmel is off the air.

Of course, this is no one-off. Trump is also trying to cow the US’s biggest newspaper, filing a $15bn lawsuit against the New York Times, accusing it of “spreading false and defamatory content”. The NYT has the resources to resist, but smaller US papers will have got the message. They could hardly be blamed if they now pull their journalistic punches, if only because they do not have the money to pay for a protracted legal battle against a billionaire president.

But the Trump administration is not confining its assault to the media. The Kirk killing has handed it an opportunity to crack down on dissent itself. Witness the promise Trump aide Stephen Miller made this week – on the Charlie Kirk podcast – to take on those left-of-centre organisations whose “messaging” is “designed to trigger and incite violence”. It is hardly a stretch to assume that Miller will........

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