The 'Occupy' movement is holding gatherings around the world as protesters meet in the financial centres of several cities. The movement's central site, United for Global Change, says 951 cities in 82 countries will participate in rallies.

Dozens of protesters were arrested in New York as thousands marched through the city's financial district before moving on to Times Square. Protests were also held elsewhere in the US and Canada, notably in Washington DC, the US capital.

And several cities across the world - from Tokyo to Alaska via London, Frankfurt and Washington - held demonstrations in a show of solidarity with the rallies that began last month in New York.
 
But does the movement have a defined agenda? Could it be a catalyst for change? And at what price?
 
Inside Story, with presenter Mike Hanna, discusses with Mark Bray, an organiser and media team member of 'Occupy Wall Street'; Alessio Rastani, an independent stock broker; and Dean Baker, the co-director of the Center for Economic and Policy research.