Beijing isn't alone in its "edifice complex," the massive urban makeover that has transformed the Chinese capital in the run-up to the Summer Olympics. In Shanghai the remodeling of the city's famous Bund waterfront has led to some raised eyebrows. My colleague Duncan Hewitt writes from Shanghai:

When Shanghai does something, it doesn't do it by halves. For years, local urban planners have admitted that the city made a mistake in the 1990s, when it routed one of its major highways right along the famous Bund waterfront. Since then conservationists have dreamt of the day when the traffic would be rerouted, or even put underground in a tunnel, to spare the historic structures from pollution and improve the view of the famous old stretch of colonial-era buildings.

If affirmative action in the United States has you confused, imagine what it's like in Brazil, where everything is muddier. Half a millennium of mingling by Africans, Europeans and Indians gave this New World nation a hundred faces and more colors than Crayola. (One famous national census turned up 136 terms by which Brazilians classified their complexion, from "dawn white" to "cinnamon.") The record-keepers, hoping to tidy things up, reduced the official lexicon of racial types to just five: white, oriental, indigenous, black and pardo (brown). But to this day, most Brazilians simply shrug and say they are a mixed-blooded people.

Blurry as that seems, this fluid self-image has been key to the country's identity. Now, thanks to an aggressive new brand of racial politics, the picture is about to change.

She was beautiful, glamorous and wronged. Her compassion touched the lives of millions. No other member of the Royal Family could match her universal appeal. In the words of the then-Prime Minister Tony Blair, she was "The People's Princess."

So much for the first hasty draft of history. Since then the revisionists have been at work, and with reason. It's ten years this week since Diana, Princess of Wales, died in a Paris car smash. The British nation has had plenty of time to mull the record, and it's no longer quite so sure about her legacy.