HONG KONG -- Born into a haze of teargas, Hong Kong's Umbrella Movement has been a four-week roller coaster ride replete with joyous celebration, anti-occupy violence and the looming danger of extinction by exhaustion. The demonstrations have swung back and forth between extremes, with several incidents of police and anti-occupy violence reinvigorating a movement that appeared to be petering out.
Protesters are demanding Beijing retract its plan to vet candidates for Hong Kong's 2017 elections for Chief Executive, the first such general elections for the post. Debate on that topic has ping-ponged between Beijing and Hong Kong for years, but the Umbrella Movement itself emerged almost spontaneously. The timeline below traces its development.