Donald Trump and the Republican party may have won a decisive victory, but do not expect the anger that has blighted America since Trump announced he was running for office nine years ago to subside. Anger and grievance are the fuel rods of Maga populism, and they must be kept at dangerously high temperatures for the movement and a second Trump term to operate.

Watching the last four weeks of the campaign, the uninhibited rage of Trump and his supporting acts at rallies was very striking. There was no attempt at decent norms. As the election neared, speeches became louder and more laced with vitriol, to the degree that commentators believed they had gone too far for the American public.

First lesson of the Democrat defeat is that most US voters lapped it up. This is what they want. America is a very angry place, much more so that than its neighbour to the north, Canada. In the US, dissatisfaction with opportunities, the state of the country and the government have risen sharply since the Reagan era, whereas in Canada dissatisfaction has only increased over the government’s failure to protect the most vulnerable in society. That says a lot about the wildly differing tone of the two societies as well as levels of available empathy.

Road rage in the US doubled between 2019 and 2022, with 44 people killed or wounded by gunfire on the roads every month, a ­figure that bucks the trends of violent crime and murder that have been generally declining in the US since 1990.

There are a lot of people walking around with the bewildering, hair-trigger rage of John Goodman’s character Walter Sobchak in the Coen brothers’ 1998 film The Big Lebowski. Trump echoes the craziness, amplifies it, then uses the energy tha t it returns to him.

This is a feedback loop, but the anger doesn’t just circle with the same intensity between Trump and his people; it steadily increases.

At a Trump rally you became aware of the exuberant high of the outrage, that this is a fix enjoyed across America both by those who tend towards unreflective negativity, racism and misogyny and by people who have a genuine complaint about their lives. In both cases they have acquired the habit of rage, and it has become a meaningful and gratifying part of their identity.

The anger is not simply going to evaporate when Trump takes over in January, not only because it’s too important to people’s sense of political self but also because the communication channel between the president and his supporters works only at this level. There is no exchange of ideas, of course, no sense that he leads with a vision other than the one that meets their anger with a promise of destruction.

The early evidence of this political wrecking machine comes with the appointments of Tulsi Gabbard as director of national intelligence, Matt Gaetz as attorney general and Fox News anchor Pete Hegseth at the Pentagon, all of whom cannot fail to vandalise and degrade the institutions they take over. Indeed, that appears to be their brief.

When he moves back into the White House with the Senate, Congress and supreme court in the control of the Republican party, he will be one of the most powerful presidents ever to have governed and he will be 100% responsible for the fortunes of Americans.

How will his supporters, so used to reflexively blaming Washington and the government, confront his responsibility when he fails to improve their lives, as he certainly will because of a suicidal tariff regime, tax cuts to the rich and corporations that will increase national debt, cuts to Medicaid and mass deportations of undocumented immigrants that will severely damage growth as well as cause unbelievable pain to separated families across America?

His failure will be a problem for his supporters, who can’t lose faith in their idol, and also for Trump, who must not let their support fall away. The solution for both parties will be to maintain the anger but divert it away from Trump.

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And this is where we should fear for America. Trump has been lining up scapegoats. He has promised to persecute “the enemies within” and “radical left communists” like Adam Schiff, the new senator for California, and the former speaker Nancy Pelosi. He has made threats to Michelle Obama and Liz Cheney, who endorsed Democrat candidate Kamala Harris, and has demanded that CBS’s broadcast licence be revoked. He has suggested “one really violent day” and “one rough hour” against petty criminals.

He will resort to this list whenever he needs to, but it will be America’s undocumented immigrants who will initially suffer, for next to the economy they topped the concerns of Republican voters. Trump will always be able to satisfy Maga anger by promising new and more cruel actions against immigrants, among which measures are likely to be privately run detention camps.

There is no telling where this will end, no sense where national resistance will come in a society that is unused to dealing with an authoritarian who exploits dark and violent emotions as expertly as Trump does.

The Democrats are plunged in a round of recriminations about the defeat, but they need to find new leadership and a strategy to deal with the anger that now threatens America and its institutions of government. When fuel rods overheat in a nuclear reactor, the result is usually meltdown.