Protesters under arrest in London

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STORY: A largely peaceful protest in the heart of London's financial district turned violent on Saturday (October 15), as tension between demonstrators and police began to escalate.
Up to three thousand people were gathered near to London's stock exchange for a protest over economic inequality that organizers hope will match New York's 'Occupy Wall Street' movement.
But organizers said one thousand of their number are trapped inside a tight police cordon in the immediate vicinity of St Paul's Cathedral, under a controversial police tactic known as "kettling".
For more than a month demonstrators have occupied New York's Zuccotti Park, near the city's financial center of Wall Street, often leading to clashes with police.
Throughout the day worldwide protests have sprung up in countries from New Zealand to Taiwan, in part a response to calls from the New York demonstrators for more people to join them.