“Moments after the judge announced her decision, Mr. Navalny called for protests in a video message to his supporters. One of his top aides, Leonid Volkov, said Mr. Navalny’s nationwide network was preparing to organize demonstrations across Russia on Saturday. ‘Do not be afraid. Take to the streets. Don’t do it for me, do it for yourselves and for your future.'” Russian Court Orders Aleksei Navalny Held for 30 Days. He was arrested the moment his plane from Germany landed in Russia. He’s being held in Matrosskaya Tishina prison, the place where Sergei Magnitsky was murdered. (On a positive note, at least as of tomorrow, Putin won’t have an ally in the White House.)