A protester holds a sign behind McKay, President of BP America, during a break in testifying before a senate hearing in Washington

A protester holds a sign behind Lamar McKay, Chairman and President of BP America, during a break in testifying before a Senate Energy and Natural Resources hearing on the accident in the Gulf of Mexico involving the offshore oil rig Deepwater Horizon in Washington, May 11, 2010. U.S. lawmakers start two days of hearings in Washington on the deadly drilling rig explosion and the oil spill that threatens an economic and ecological catastrophe on U.S. Gulf shores. REUTERS/Jason Reed (UNITED STATES – Tags: POLITICS DISASTER ENERGY ENVIRONMENT IMAGES OF THE DAY)