Havana-AP -- Hundreds of thousands of people are jamming a square in Havana as Cuba celebrates May Day.
Most are wearing bright red shirts and many are waving small Cuban flags.
The celebration comes as Havana awaits the release of a U-S government report by the "Commission for a Free Cuba." That report is expected to offer ways to hasten a democratic transition in the country and provide assistance afterward.
Cubans speculate that the recommendations could include military action.
In a speech at today's rally, Cuba's top labor leader said Cuban workers will resist efforts to change the island's system -- including a military attack.
He says Havana doesn't underestimate the danger posed by the United States, nor is it intimidated.
Cuba has been the target of a U-S economic embargo for four decades.
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