New : 10,000 demonstrators arrested after violent police crackdown ; opposition leaders call for president 's resignation . Riot police detain dozens of protesters in Kiev 's main square -- state media . But still hope that other voices will speak up . United States condemns ` ` violence against protesters '' in Independence Square . Interior Ministry says riot police responded to ` ` attack by protesters '' -- state media .
New : 10,000 demonstrators arrested after violent police crackdown ; opposition leaders call for president 's resignation . Riot police detain dozens of protesters in Kiev 's main square -- state media . United States condemns ` ` violence against protesters '' in Independence Square . Interior Ministry says riot police responded to ` ` attack by protesters '' -- state media .