http://www.bbc.co.uk/news/world-asia-pacific-12593328Dozens of police vans were parked on the roadside, uniformed men with dogs patrolled up and down, street cleaning vans drove up and down spraying water to keep people away, and a sudden rash of suspiciously unnecessary street repairs meant big hoardings had been put up.
It would have been farcical if it hadn't turned so brutal.
The reason for all this nervousness was the call that had gone out over the internet for Chinese people to stage their own "Jasmine Protests", copying the wave of democratic revolutions in the Middle East and north Africa.
The police were monitoring everyone going into the pedestrian zone. But unable to distinguish the protesters, who'd been called to "stroll" peacefully and silently past McDonald's restaurant at 1400, from genuine shoppers they focussed on picking out foreign reporters and cameramen.
It looks like the Chinese leaders are trying to make sure what's happening in the Middle East and African, doesn't happen there.