London austerity protest

Demonstrators stand outside a branch of Starbucks as they gather near St Paul's Cathedral before the start of an anti austerity protest march through central London, Saturday, Oct. 20, 2012. (AP Photo)

A man holds a poster featuring an image of Conservative Prime Minister David Cameron and the legend Get the Tories Out , as demonstrators take part in an anti austerity protest march entitled a future that works through central London, Saturday, Oct. 20, 2012. (AP Photo)

Demonstrators take part in an anti austerity protest march entitled a future that works through central London, Saturday, Oct. 20, 2012. (AP Photo)

A British police officer holds a demonstrator outside a fast food restaurant during an anti austerity protest march through central London, Saturday, Oct. 20, 2012. (AP Photo)

Demonstrators attempt to enter a drug store as they take part in a anti austerity protest march through central London, Saturday, Oct. 20, 2012. (AP Photo)

A member of the British military's household cavalry stands guard in his ceremonial attire as demonstrators in an anti austerity protest march past on Whitehall in central London, Saturday, Oct. 20, 2012. (AP Photo)

A demonstrator wearing a mask depicting Britain's Prime Minister David Cameron, center, takes part in an anti austerity protest march through central London, Saturday, Oct. 20, 2012. (AP Photo)

Demonstrators hold placards as they take part in an anti austerity protest march through central London, Saturday, Oct. 20, 2012. (AP Photo)

A demonstrator holds up a placard outside the gates of Downing Street during an anti austerity protest march through central London, Saturday, Oct. 20, 2012. (AP Photo)

Demonstrators take part in an anti austerity protest march through central London, Saturday, Oct. 20, 2012. Tens of thousands of demonstrators descended on the British capital Saturday in a noisy but peaceful protest at a government austerity drive aimed at slashing the nation's debt. (AP Photo)

Demonstrators sit on the base of Nelson's Column in Trafalgar Square during an anti austerity protest march through central London, Saturday, Oct. 20, 2012. (AP Photo)

A police officer handcuffs a demonstrator before she was put in a police van during an anti austerity protest march through central London, Saturday, Oct. 20, 2012. (AP Photo)

Demonstrators take part in an anti austerity protest march through central London, Saturday, Oct. 20, 2012. Tens of thousands of demonstrators descended on the British capital Saturday in a noisy but peaceful protest at a government austerity drive aimed at slashing the nation's debt. (AP Photo)

A demonstrator shouts at police officers during an anti austerity protest march through central London, Saturday, Oct. 20, 2012. (AP Photo)

A masked demonstrator on stilts takes part in an anti austerity protest march through central London, Saturday, Oct. 20, 2012. Tens of thousands of demonstrators descended on the British capital Saturday in a noisy but peaceful protest at a government austerity drive aimed at slashing the nation's debt. (AP Photo)