A Russian court has jailed an ex-Mayor for nine days for urging people to protest for the release of jailed Kremlin critic Alexei Navalny. Yevgeny Roizman was charged with organising an illegal rally after urging his Twitter followers to take to the streets. "Organising [a protest] means one tweet and...retweet...This...constitutes a call [to take to the streets]," Roizman had tweeted.