Leading opposition figure Boris Nemtsov shows a victory sign from a police bus after he was detained...
Leading opposition figure Boris Nemtsov (C) shows a victory sign from a police bus after he was detained during the unauthorized protest rally in Moscow July 31, 2010. Supporters of various opposition parties gathered in a one-year old tradition for a rally to defend Article 31 of the Constitution of the Russian Federation, which says, - Citizens of the Russian Federation shall have the right to gather peacefully, without weapons, and to hold meetings, rallies, demonstrations, marches and pickets. REUTERS/Denis Sinyakov (RUSSIA - Tags: POLITICS CIVIL UNREST)