Political assassinations. Troops on city streets. National protests. We examine the edgy mood inside America through the lens of past periods of intense, violent partisanship. Our correspondent sees two motives for the visit to Greenland by Emmanuel Macron, France’s president: one aimed at Donald Trump and another at Europe’s self-conception. And what AI learned from scans of the Dead Sea Scrolls. Get a world of insights by subscribing to Economist Podcasts+. For more information about how to access Economist Podcasts+, please visit our FAQs page or watch our video explaining how to link your account.