Thousands of protesters are demanding the release of Alexei Navalny, the country's top opposition figure. <br /> <br />Police have arrested hundreds of pro-Navalny supporters attending the nationwide protests. <br /> <br />Navalny was detained on 17 January after he flew back to Moscow from Germany.<br /> <br />Russian authorities had promised a tough crackdown prior to the protests. <br /> Report by Shoulderg. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn
