People march on a sidewalk during a May Day protest in New York on May 1. People around the world are gathering for May Day protests against austerity measures and calling for higher wages. In the United States, the Occupy Wall Street movement is trying to use May Day to rejuvenate.

Workers clean the vandalized windows of a Bank of America branch in Washington, Tuesday, May 1.

A protester affiliated with the Occupy Wall Street movement is stopped by the police as he stands in the middle of Sixth Avenue during a protest march to the Bank of America headquarters in New York City May 1. Occupy Wall Street joins labor groups for a day of protests on Tuesday to mark International Workers Day and to try to breathe fresh life into the movement that sparked a wave of nationwide protests against economic injustice eight months ago.

California Highway Patrol officers take positions at the Golden Gate Bridge in anticipation of May Day demonstrations in San Francisco, California May 1. Authorities anticipated demonstrators would shut down the bridge, but agreement was reached to prevent that action.

People march past a bank during a May Day protest in New York, on May 1. People around the world are gathering for May Day protests against austerity measures and calling for higher wages. In the United States, the Occupy Wall Street movement is trying to use May Day to rejuvenate.

Occupy Wall Street demonstrators dance as hundreds of protesters gather during a May Day labor rally in Bryant Park on May 1, in New York City. Demonstrators have called for nation-wide May Day strikes to protest economic inequality and political corruption.

An 'Occupy London'' protester hands out flowers to mark May Day, to commuters in a central London train station, Tuesday, May 1.