On September the 10th 2025, right-wing political activist and media personality Charlie Kirk was assassinated while speaking at an event in Utah. In the aftermath, his friend JD Vance, the US Vice President, hosted a special memorial edition of ‘The Charlie Kirk Show’, live from the White House, during which he called for unity, but said that could only be found by “climbing the mountain of truth”.

“While our side of the aisle certainly has its crazies, it is a statistical fact that most of the lunatics in American politics today are proud members of the far left,” he said. We investigate the statistical evidence around political violence – both in people’s attitudes and the crimes themselves.

Presenter: Tim Harford Reporter: Lizzy McNeill Series producer: Tom Colls Sound mix: Hal Haines Editor: Richard Vadon