The genius of Donald Trump, it has long been observed, is to turn subtext into text. What was hinted at or hidden is, with him, brought shamelessly to the surface.

So it is with his latest scheme, his instruction to the top brass of the US armed forces to lay on a military parade in the nation’s capital, perhaps on 4 July. He’d been nagging the generals about this for a while but, according to the Washington Post, he gave the order at a meeting at the Pentagon last month.

Donald Trump orders Pentagon to plan grand military parade Read more

No need for us to deconstruct the motive behind this instruction. It came after Trump was the guest at France’s Bastille Day parade, where he stood at Emmanuel Macron’s side and watched tanks, gun trucks and column after column of starchly uniformed soldiers. “We’re going to have to try and top it,” Trump said afterwards. (The actual order to military chiefs was phrased in the language of a spoiled child: “I want a parade like the one in France.”)

By his own admission, then, Trump is engaged in a familiar, mine’s-bigger-than-yours, macho competition, with military hardware his chosen measure. Recall the equally uncoded tweet directed at Kim Jong-un last month, when the US president urged someone to tell the North Korean dictator that Trump’s “nuclear button” is a “much bigger & more powerful one than his, and my Button works!”

Donald J. Trump (@realDonaldTrump) North Korean Leader Kim Jong Un just stated that the “Nuclear Button is on his desk at all times.” Will someone from his depleted and food starved regime please inform him that I too have a Nuclear Button, but it is a much bigger & more powerful one than his, and my Button works!

Opponents can react to this in one of two ways. Mockery is the obvious response, seeing in Trump’s desire to display US tanks and rocket launchers on Pennsylvania Avenue the same transparent insecurity as the mid-life crisis neighbour who suddenly turns up with a Ferrari in the driveway.

Or we can be more sober, and regard this as just the latest and potentially most spectacular demonstration of Trump’s authoritarian instincts. Just as he has repeatedly expressed admiration for strongmen in the Vladimir Putin mode, just as he regards the machinery of the state as his personal staff – casually referring to “my justice department” or “my generals” – and just as this week he suggested that those who refuse to applaud him are “treasonous”, so this is yet more proof that Trump’s instincts are those of the autocrat. Little wonder that he wants to take the salute at the kind of military display more associated with Moscow or Pyongyang than Washington DC.

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The trouble with both those responses, however, is that they fail to take account of the fact that many millions of Americans might well like such a show. While progressives might complain about the banana republic militarism, while fiscal conservatives will worry about the huge cost of diverting all that kit to the capital and while the city itself frets about the damage 70-tonne tanks are liable to do to its roads, a large chunk of US society will want to rise to its feet and applaud.

That would be true of any event involving the military, whose place in American national life is now all but sacred. Fox News, the Republicans and the conservative media-industrial complex will waste no time in saying the parade is a celebration of the troops – and therefore any critic is really criticising “the young men and women who heroically defend America’s freedom and put themselves in harm’s way”, or words to that effect.

It means opponents will have to be canny. A counter-demonstration could easily be cast as unpatriotic, hostile to those in uniform, rather than to the commander-in-chief (who, of course, dodged military service himself, later claiming his battle to avoid contracting a sexually transmitted disease despite intense promiscuity was his “personal Vietnam”). But there is an opening here nonetheless.

If Trump wants to show his strength on the streets, the opposition can do the same. Perhaps it could organise an alternative parade, whose theme is mockery of the would-be despot. And given the neurotic insecurity we know propels this man, I have an idea for the central display. While the armoured cars rumble down Pennsylvania Avenue and fighter jets fly over the Washington Monument, the rival procession could feature a giant effigy of Donald J Trump – with tiny, tiny hands.

• Jonathan Freedland is a Guardian columnist