People walk on the champs Elysees avenue during the "day without cars", with the Arc de Triomphe in background, in Paris, on Sept. 22, 2019. Conservatives and conspiracy theorists are increasingly convinced the concept of a “15-minute city” is the latest nefarious plot to curtail individual freedoms. But urban experts and city officials say the design principle -- recently embraced by cities including Oxford, England, Paris, and Cleveland, Ohio -- is simply about building more compact, walkable communities where people are less reliant on cars. (AP Photo/Thibault Camus, File)