Weekend Edition Saturday host Scott Simon documented his mother's final days to his more than 1.2 million Twitter followers. Stephen Voss/NPR hide caption

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Erdem Gunduz (center) stands in Instanbul's Taksim Square early Tuesday. After weeks of clashes with police, many Turkish protesters were inspired to emulate Gunduz, and stand silently. Petr David Josek/AP hide caption

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Online activist Ali Abdulemam (right) is greeted in Manama, Bahrain, on Feb. 23, 2011, shortly after anti-government protests began. Wanted by the government, he went into hiding the following month. He escaped from Bahrain after two years underground and made his first public appearance Wednesday in Oslo, Norway. Mazen Mahdi/EPA/Landov hide caption

itoggle caption Mazen Mahdi/EPA/Landov

Journalist Marie Colvin (second from left) poses with Libyan rebels in Misrata on June 4, 2011. She was killed in the besieged Syrian city of Homs on Wednesday. Later that day in Tripoli, fellow war correspondents gathered to remember her. Zohra Bensemra/Reuters/Landov hide caption

itoggle caption Zohra Bensemra/Reuters/Landov