As it happens, I was in Detroit this month. I went to see the art and the architecture, domains in which Detroit is still one of the richest cities in the United States. It's broken and it's broke, and now it's officially bankrupt, too. But bankruptcy is actually a device for escaping from unpayable debt.
All over the world, Detroit's bankruptcy is being used as an excuse to pore over what's sometimes called "ruin porn": pictures of the rotting, empty houses that still stand and the proud skyscrapers which have already been torn down.
Two-thirds of Detroit's population have fled in the past 50 years, but there were specific reasons why Detroit fell into decline, and there are also reasons to believe that it could flourish again - not as a major manufacturing centre, perhaps, but "major manufacturing centres" probably don't have a bright long-term future anywhere. There are other ways to flourish, and Detroit has some valuable resources.
The events which triggered the city's decline are well known. Large numbers of African-Americans from the southern states migrated to Detroit to meet the demand for factory workers during and after World War 11. Being mostly unskilled, they started in the worst jobs - and even after they had acquired the skills, they stayed in low-paying jobs because of racial prejudice.
Spurned by the unions and victimised by a racist police force, they eventually rioted in the summer of 1967. Brutal policing made matters worse and hundreds were killed, but the worst consequence was the fear that the violence engendered. The great majority of the whites just left left town.