Chaos in Kiev

Protesters and riot police clash in front of the Cabinet of Ministers of Ukraine during a rally in Kiev, Nov. 24, 2013.

Thousands of pro-Europe protesters in Ukraine attempted to storm the government building in the capital of Kiev Sunday, clashing with police who fired tear gas to keep them back.

Protesters tried to break through police ranks surrounding the building, with some throwing stones and hitting officers with the signs they were carrying, as police fought back with batons, an AFP correspondent reported.

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Demonstrators shout slogans during a protest in Kiev, Ukraine, Nov. 24, 2013.

Tens of thousands of demonstrators marched through central Kiev on Sunday to demand that the Ukrainian government reverse course and sign a landmark agreement with the European Union in defiance of Russia.

The protest was the biggest Ukraine has seen since the peaceful 2004 Orange Revolution, which overturned a fraudulent presidential election result and brought a Western-leaning government to power.

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A general view of the Ukrainian opposition rally in Kiev, Nov. 24, 2013.

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A female opposition supporter, right, stands next to riot police, during a protest in front of the Ukrainian Cabinet of Ministers in Kiev, Ukraine, Nov. 25, 2013.

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People hold an EU flag during a rally in Kiev, Ukraine, Nov.24, 2013.

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Riot police wait outside the Cabinet of Ministers of Ukraine in Kiev on Nov. 24, 2013 as smoke swirls from smoke bombs thrown by protestors during an anti-government demonstration.

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Protesters and riot police use tear gas during clashes in front of the Cabinet of Ministers of Ukraine during a rally in Kiev, Nov. 24, 2013.

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Protesters and riot police clash in front of the Cabinet of Ministers of Ukraine during a rally in Kiev, Nov. 24, 2013.

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Demonstrators hold up a flag with the face of jailed former Ukrainian prime minister Yulia Tymoshenko during a protest in Kiev, Ukraine, Nov. 24, 2013.

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Protesters and riot police use tear gas during clashes in front of the Cabinet of Ministers of Ukraine during a rally in Kiev, Nov. 24, 2013.

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Protesters shout during a rally in Kiev, Nov. 24, 2013.

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Policemen stand guard in front of the Cabinet of Ministers of Ukraine during a rally in Kiev, Nov. 24, 2013.

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Protestors wave flags during a rally in Kiev, Nov. 24, 2013.

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Opposition protesters spray tear gas at riot police in front of the Ukrainian Cabinet of Ministers in Kiev, Ukraine, Nov. 24, 2013.

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Opposition protesters and riot police spray tear gas in front of the Ukrainian Cabinet of Ministers in Kiev, Ukraine, Nov. 24, 2013.

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Opposition protesters and riot police fight in front of the Ukrainian Cabinet of Ministers in Kiev, Ukraine, Nov. 24, 2013.

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Opposition protesters and riot police clash in front of the Ukrainian Cabinet of Ministers in Kiev, Ukraine, Nov. 24, 2013.

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A man holds a placard during a rally in Kiev, Ukraine reading "To Europe Without Yanukovych," Nov. 24, 2013.