April 15, 2010 (22 images)

Nadine Sweeney wears her political beliefs on her at at a tea party rally at Daley Plaza in Chicago on April 15, 2010. The rally was one of thousands held by tea party activists around the country on tax day. UPI/Brian Kersey

Montreal Canadiens Jaroslav Spacek (6) celebrates his team's overtime game 1 win against the Washington Capitals during the NHL Eastern Conference Quarterfinals at the Verizon Center in Washington on April 15, 2010. UPI/Alexis C. Glenn

Tea Party demonstrators face off against supporters of U.S. President Barack Obama during a rally at Freedom Plaza on tax day in Washington on April 15, 2010. UPI/Roger L. Wollenberg

U.S. President Barack Obama (C) tours the commercial rocket processing facility of Space Exploration Technologies, known as SpaceX, along with Elon Musk, SpacdeX CEO at Cape Canaveral Air Force Station in Cape Canaveral, Florida on April 15, 2010. President Obama visited the Kennedy Space Center to deliver remarks on the new course the administration is charting to maintain U.S. leadership in human space flight. UPI/Bill Ingalls/NASA