Prominent Russian opposition leader Alexei Navalny has been jailed for 15 days for disobeying police orders during huge anti-government protests Sunday.Navalny, a 40-year-old lawyer and activist who plans to run for president in 2018, was the organizer of protests across the country that called for the resignation of Russian Prime Minister Dmitry Medvedev over corruption allegations. The mostly unsanctioned protests, held in more than 80 towns and cities from St. Petersburg to Vladivostok, were the largest in Russia since a wave of street rallies in 2011 and 2012 over alleged electoral fraud, and were notable for the young age of the protesters. Russian newspaper Kommersant reported that about half were students.Navalny was sentenced Monday, by the same court that fined him 20,000 rubles ($350) for organizing the protests earlier in the day.During the hearing, Navalny was in a combative mood, asking the court to call Medvedev as a witness to account for why so many people had turned out to protest, and at one point compared the judge to his 15-year-old daughter. "When she is wrong she, like you, also becomes rude," reporters in the courtroom quoted him as saying.Read the rest of this article on VICE NEWS.