Whatever happens next, one day historians will have to explain why a candidate who earlier this year had been presented as disciplined started to veer off into unrestrained racist rhetoric and dancing for 40 minutes to his own playlist. Was it age, as plenty of commentators have speculated? Was it a brilliant attempt to balance dehumanizing attacks on minorities with an effort to make himself look human?

A much more sinister explanation must be taken seriously. We still assume that we are witnessing two campaigns for the presidency. But what if we are witnessing one campaign and one slow-motion coup, whose organizers need to go through the motion of campaigning for the plan to work? Since winning at the ballot box does not matter, taking a break to listen to Pavarotti isn’t a problem; conversely, a festival of racism and conspiracy theories, as at Madison Square Garden, is not about convincing any undecided voter, but motivating committed Trumpists to go along with another coup attempt.

To be sure, this can also sound like conspiracy theory. The point is not prediction, but to call for preparedness. After all, there is an overwhelming number of reasons why, should Trump lose, he will once more try to take power anyway. His followers have long been primed to assume that evil Democrats will steal the election. The unchecked racism fits into a logic of far-right populism more........

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