Kiev on fire: Anti-government protesters, riot police face off in Ukraine

Feb. 22, 2014: A suspected supporter of Ukraine's embattled president Viktor Yanukovych, center, is shielded by anti-government protesters in Kiev, Ukraine. (AP)

Feb. 20, 2014: Anti-government protesters clash with riot police in Kiev's Independence Square, the epicenter of the country's current unrest, in Ukraine. (AP)

Feb. 22, 2014: Former Ukrainian Prime Minister Yulia Tymoshenko is freed from prison in Kharkiv, Ukraine. (AP)

Feb. 20, 2014: Activists reinforce the barricades in Kiev's Independence Square, the epicenter of Ukraine's current unrest. (AP)

Feb. 20, 2014: Activists have a rest at the burning barricades, on the side of bloody clashes close to Independence Square, the epicenter of the country's current unrest, Kiev, Ukraine. Fearing that a call for a truce was a ruse, protesters tossed firebombs and advanced upon police lines Thursday in Ukraine's embattled capital. Government snipers shot back and the almost medieval melee that ensued left scores of people dead. (AP)

Feb. 20, 2014: Flowers are laid on an Ukrainian flag covering body of a killed anti-government protester, in central Kiev, Ukraine. (AP)

Feb. 20, 2014: Anti-government protesters man a barricade in central Kiev, Ukraine. (AP)

Feb. 20, 2014: Police officers block a street near the Cabinet of Ministers offies in the center of Kiev, Ukraine.  (AP)

Feb. 20, 2014: Activists pay respects to protesters killed in clashes with police in Kiev's Independence Square. (AP)

Feb. 20, 2014: An anti-government protester scans an area behind barricades on the outskirts of Independence Square in Kiev, Ukraine.  (AP)

Feb. 20, 2014: Activists pay respects to protesters killed in clashes with police in Kiev's Independence Square. (AP)

Feb. 20, 2014: Police officers carry mattresses to take a rest at Ukraine's parliament in Kiev, Ukraine.  (AP)

Feb. 20, 2014: People pass stones to each other to use in attacks against police, during clashes with riot police in Kiev's Independence Square, the epicenter of the country's current unrest.  (AP)

Feb. 19, 2014: Anti-government protesters throw stones during clashes with riot police in Kiev. (AP)

Feb. 20, 2014: Activists and priests pay respects to protesters who were killed in clashes with police, a flag held by one activist reads "For Ukraine"; in Kiev's Independence Square. (AP)

Feb. 20, 2014: Fierce clashes between police and protesters, some including gunfire, shattered a brief truce in Ukraine's besieged capital Thursday, killing numerous people. The deaths came in a new eruption of violence just hours after the country's embattled president and the opposition leaders demanding his resignation called for a truce and negotiations to try to resolve Ukraine's political crisis. (AP)