How in the hell does Jeremy Corbyn become such a sensation at Glastonbury? A sixty-eight-year-old politician propped in front of a crowd of young people gathered to take in Run the Jewels does not on the surface sound at all like the raw material of cultural memory. And yet, when he spoke, the crowd chanted his name (to the tune of the White Stripes no less). They cheered and applauded and shouted themselves hoarse.

There is, ultimately, no reason they shouldn’t have. The leader of the Labour Party who led it to its best showing in twenty years did so by saying that this crowd of young people matters.