The protesters clashed with police Tuesday night near city hall where the group has been demonstrating for the last 10 days.
“After today’s development, the authorities lost the chance to speak to us in a civilized way,” said opposition leader Vitali Klitschko, addressing the crowd. “I address all people of Kiev: please come here -- only together can we defend our rights.”
U.S. Secretary of State John Kerry expressed disgust at the crackdown.
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