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Mon Jan 20, 2014 8:30am EST

1 of 22. Opposition leader Vitaly Klitschko (C) reacts after he was sprayed with a powder fire extinguisher during a pro-European integration rally in Kiev January 19, 2014. Protesters attacked riot police with sticks in Kiev on Sunday and tried to overturn a bus blocking their path to parliament, as up to 100,000 Ukrainians massed in defiance of sweeping new laws aimed at stamping out anti-government demonstrations.

Credit: Reuters/Valentyn Ogirenko

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