Most media stories set in shopping malls don't really tell you much about what it feels like for the people who work in a big retail operation, or for the people who hang out at the mall. Because the mall's more than just sales.

American cities have gone through a massive wave of gentrification in the last few decades. To some people, it's not a natural ebb and flow of the real estate market, but a plot, by rich, mainly white people, to take over the neighborhoods of poor, mainly black people. This American Life producer Jon Jeter reports on how, in neighborhoods all over the country, the plot has a name, "The Plan," and most people you talk to know about it.