Occupy Wall Street demonstrators, whose anti-greed message spread worldwide during an eight-week encampment in Lower Manhattan last year, plan marches across the globe tomorrow calling attention to what they say are abuses of power and wealth.

Organizers say they hope the coordinated events will mark a spring resurgence of the movement after a quiet winter. Calls for a general strike with no work, no school, no banking and no shopping have sprung up on websites in Toronto, Barcelona, London, Kuala Lumpur and Sydney, among hundreds of cities in North America, Europe and Asia.

In New York, Occupy Wall Street will join scores of labor organizations observing May 1, traditionally recognized as International Workers’ Day. They plan marches from Union Square to Lower Manhattan and a “pop-up occupation” of Bryant Park on Sixth Avenue, across the street from Bank of America’s Corp.’s 55-story tower.