Many have been intrigued by the Occupy Wall Street movement against financial inequality that started in a New York park and expanded across America from Tampa, Florida, to Portland, Oregon, and from Los Angeles to Chicago.

Hundreds of activists gathered a month ago in the Manhattan park two blocks from Wall Street to vent their anger at what they see as the excesses of New York financiers, whom they blame for the economic crisis that has struck countless ordinary Americans and reverberated across the global economy.

Inspired by the momentum of the US movement, which started small but is now part of US political debate, activists in London will gather to protest outside the London Stock Exchange on October 15 on the same day that Spanish groups will mass on Madrid's Puerta del Sol square in solidarity.

In London, which was hit by rioting and looting by disaffected people in early August, protesters were using social media like Facebook and Twitter to plan their Stock Exchange protest on October 15.

Newspapers around the world have sought to identify the true motor of discontent driving the Occupy Wall Street movement.