California Highway Patrol members stand watch at the Golden Gate Bridge in 

California Highway Patrol members stand watch at the Golden Gate Bridge in preparation for possible May Day protests in San Francisco, Tuesday, April 1, 2012.  Protesters had backed away from a call to block the bridge. But scores of California Highway Patrol officers nonetheless lined the span and gathered around the toll plaza this morning. (AP Photo/Eric Risberg)
Associated Press
California Highway Patrol members stand watch at the Golden Gate Bridge in preparation for possible May Day protests in San Francisco, Tuesday, April 1, 2012. Protesters had backed away from a call to block the bridge. But scores of California Highway Patrol officers nonetheless lined the span and gathered around the toll plaza this morning. (AP Photo/Eric Risberg)
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