Akhir 21, 1432 H/March 26, 2011, SPA -- A quarter-million mostly peaceful demonstrators marched through central London on Saturday against the toughest cuts to public spending since World War II, with a small breakaway group smashing its way into a bank, breaking windows and spray painting logos on the walls, according to AP. Another group of black-clad protesters hurled paint bombs and ammonia-filled light bulbs at police. Organizers of the March for the Alternative said people from across the country were peacefully joining in the demonstration, the biggest protest in London since a series of rallies against the Iraq war in 2003. Commander Bob Broadhurst of the Metropolitan Police confirmed that more than 250,000 people had marched peacefully, but said around 500 had caused trouble in London's main shopping streets. He said nine people had been arrested, for public disorder and criminal damage. Police said one group of a few hundred people broke away from the main march, scuffling with police officers and attempting to smash shop windows on two of London's main shopping streets. Others threw objects at the posh Ritz Hotel in nearby Piccadilly. Members of protest group UK Uncut later broke into the nearby luxury department store Fortnum and Mason and broke some displays. But the protests otherwise had a carnival feel. School teachers, nurses and students all marched through central London toward Hyde Park, one of London's biggest public gardens, with banners, balloons and whistles. Britain is facing 80 billion pounds ($130 billion) of public spending cuts from Prime Minister David Cameron's coalition government as it struggles to get the country's large budget deficit under control. The government has already raised sales tax, but Britons are bracing for big cuts to public spending. After the country spent billions bailing out indebted banks, and suffered a squeeze on tax revenue and an increase in welfare bills, Treasury chief George Osborne has staked the coalition government's future on tough economic remedies. As many as half a million public sector jobs will be lost, about 18 billion ($28.5 billion) axed from welfare payments and the pension age raised to 66 by 2020, earlier than previously planned.