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

Two men try to extinguish a tire fire Thursday in Sitra, Bahrain, near the site of an opposition rally.Nightly clashes between riot police and protesters continued Thursday night nationwide. Hasan Jamali/AP hide caption

itoggle caption Hasan Jamali/AP

Black smoke billowed from burning tents in Pearl Square in Manama, Bahrain, earlier today (March 16, 2011). Joseph Eid/AFP/Getty Images hide caption

itoggle caption Joseph Eid/AFP/Getty Images