Environmental activists stage a performance protest on Capitol Hill in Washington, Wednesday, April 20, 2011, marking the one-year anniversary of the Deepwater Horizon oil rig explosion that resulted ... more 
Environmental activists stage a performance protest on Capitol Hill in Washington, Wednesday, April 20, 2011, marking the one-year anniversary of the Deepwater Horizon oil rig explosion that resulted in the the worst offshore oil spill in U.S. history. less 
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Associated Press | Photo By J. Scott Applewhite
Wed, Apr 20, 2011 1:21 PM EDT