May Day 2012: The world celebrates

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A boy dressed as Harry Potter holds a placard as protesters gather outside St Paul's Cathedral during the 'Occupy London' protest on October 15, 2011 in London, England.

Credit:

Dan Kitwood

[View the story "May Day 2012" on Storify]May 1, or May Day, has long been celebrated around the world as International Worker's Day, or Labor Day. This year, the Occupy Wall Street movement joined labor groups for a day of protests to try to breathe fresh life into the movement that sparked a wave of nationwide protests against economic injustice eight months ago.

Here are some pictures of people around the world.