In pictures: Trade talks clashes
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Hundreds of demonstrators have clashed with riot police near the world trade talks in Hong Kong. -
Nine hundred have been "rounded up", police say. -
Some stormed police lines around the centre. -
Officers used pepper spray and batons to push them back. -
Correspondents say the unrest is the worst street violence in Hong Kong for 16 years. -
The scuffles involve South Korean farmers, South East Asian groups and European activists. -
The Koreans - who are among the most vocal of the protesters - had vowed to step up action on Saturday. -
They object to the current world trading system. -
The protests came on the penultimate day of the summit. -
Some protesters have pledged to stay outside the conference centre all night. -
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