Pro-democracy activists sleep, rest and walk on a street near the government headquarters Tuesday in Hong Kong. Students and activists, many of whom have been camped out since late Friday, spent a peaceful night singing as they blocked streets in Hong Kong in an unprecedented show of civil disobedience to push demands for genuine democratic reforms. Wong Maye-E/AP hide caption

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Protesters march as they block the main street to the financial Central district, outside the government headquarters in Hong Kong, on Monday. Protesters at times numbering in the tens of thousands have gathered to demand the right to choose the territory's next leaders. Carlos Barria/Reuters/Landov hide caption

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Riot police launch tear gas into a crowd of thousands of protesters outside the government headquarters in Hong Kong Sunday. Police warned of further measures as they tried to clear the streets. Wally Santana/AP hide caption

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