On BBC Newsnight the panel of journalists and politicians were discussing Elon Musk’s emphatic salute at US President Donald Trump’s triumphal inauguration rally in Washington.

Probably most people have seen Musk’s Dr Strangelove moment by now but none of the panel would say what it most clearly was: a Nazi salute.

Musk did not just involuntarily raise his right arm and point his fingers to heaven. He slammed his right hand into his chest, paused for a long moment, and then thrust his arm outwards as tens of millions watched nationwide, and thousands of Trump supporters in the auditorium cheered.

At this point, many people were no doubt watching stunned and wondering if they had just hallucinated Musk’s gesture, but helpfully, he then turned his back and did the same salute to those in the seats behind him.

And yet somehow Gabriel Gatehouse, a seasoned BBC observer of US politics and the far right, played down the moment, as did the great sword-carrying failed Conservative leadership contender Penny Mordaunt. Gatehouse suggested it could be a “Roman salute” and compared it to a cartoon frog that appeared in the 2016 presidential campaign.