Zimmerman Case app
The world largely celebrated the death of Osama bin Laden, though some condemned the killing by U.S. forces.
Anti-government protesters watch a television broadcasting a report about the death of Osama bin Laden in a tent at the site of a demonstration demanding the resignation of Yemeni President Ali Abdullah Saleh.
Library of Congress
Vasco da Gama arrives in India, Christopher Columbus dies, Norman Rockwell makes his Saturday Evening Post cover debut, HIV is discovered, and "Cheers" airs its series finale, all on this day.