But the reaction to Mr Musk’s rant also reveals something about the prime minister and his principal political opponent. The most important biographical difference between Sir Keir and Kemi Badenoch,

The world’s richest man has become fixated on child sexual exploitation in deindustrialized English towns—much of which took place more than a decade ago.

With 211 million followers on social media, the multibillionaire seems intent on using his global platform to rattle British politics.