Pro-democracy demonstrators in Hong Kong put the Communist Party in Beijing on notice. Their march has lasted more than 7 hours. Amazing photos of the event have international news watchers on Twitter buzzing.

More than half a million citizens turned out for the march.

The outpouring of dissent on the streets follows passage of an unofficial referendum, supported by 800,000 Hong Kong citizens, calling for full democracy and freedom from Chinese government control.

Passions are running high, but so far the demonstration has remained peaceful.

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