Clashes erupted in New York and Rome and protesters camped out Sunday in worldwide demonstrations seen as a show of force by a rising global movement against corporate greed and government cutbacks.

There were rallies in 951 cities in 80 countries around the globe on Saturday in an extension of a campaign born on May 15 with a rally in Madrid's central Puerta del Sol square by a group calling itself "Indignados" ("Indignants").

Europe sought Saturday to convince its G20 partners that it can resolve a debt crisis that is threatening to drag the world economy back into recession as finance chiefs held key talks in Paris.

While finance ministers from the world's top economies huddled over measures to keep world growth from stalling, protesters began taking to the streets for worldwide protests to vent anger at alleged corporate greed and government cutbacks.

A U.S. federal court on Friday sentenced a New York-based man to 25 years in prison after he admitted stealing more than $195 million from thousands of investors in a $400 million Ponzi scheme.

Nicholas Cosmo -- who ran two New York investment companies, Agape World Inc. and Agape Merchant Advance -- was ordered by U.S. District Court Judge Denis Hurley to pay $179 million in restitution to his victims.

Activists scuffled with police in London and decried the wealthy in Hong Kong on Saturday as an unprecedented outcry against corporate greed and government cutbacks spread worldwide.

Inspired by America's "Occupy Wall Street" and Spain's "Indignants", people took to the streets in a rolling action targeting 951 cities in 82 countries from Asia to Europe, Africa and the Americas.

G20 nations are committed to ensuring the International Monetary Fund has adequate resources to deal with the debt crisis, a draft statement from finance chiefs meeting in Paris said Saturday.

The G20 bloc of leading economies will hold further talks on the subject during a summit in the French city of Cannes on November 3 and 4, sources close to the negotiations told Agence France Presse.

India's Tata Nano, billed as the world's cheapest car, will go on sale in Bangladesh on Saturday -- but with a price tag nearly triple what it is at home.

The least expensive no-frills Nano will cost 599,000 taka ($7,900), said Abdul Matlub Ahmad, director of Nitol Motors -- Tata's sole distributor in Bangladesh.

Libya's new government vowed on Thursday to investigate "every penny" of suspicious oil contracts signed under the former regime, responsible for what it described as "unbelievable" corruption.

"Any corruption under the previous regime will be investigated... There will be specialized committees that will look into all these contracts and agreements starting with the oil sector," the National Transitional Council's oil and finance minister, Ali Tarhuni, told a news conference in Tripoli.

The Occupy Wall Street movement, which has spawned grass-roots activities around the U.S. and prompted comments from President Barack Obama, is now drawing political remarks from overseas.

Iran's top leader said Wednesday that the wave of protests reflects a serious problem that will ultimately topple capitalism in America.Ayatollah Ali Khamenei claimed the United States is in a full-blown crisis because its "corrupt foundation has been exposed to the American people."

The IMF lowered its forecasts for Asian growth and warned in a report Thursday that the region faces downside risks due to worries over the Eurozone debt crisis and a slowdown in the United States.

In its twice-yearly Asia and Pacific Regional Economic Outlook, the International Monetary Fund warned that risks for the region are "decidedly tilted to the downside."

The U.S. Congress has approved long-stalled free trade agreements with Colombia, Panama and South Korea that President Barack Obama trumpeted as engines of growth and job-creation.

The accords will "significantly boost exports that bear the proud label 'Made in America,' support tens of thousands of good-paying American jobs and protect labor rights, the environment and intellectual property," Obama cheered after the pacts were approved on Wednesday.