Moscow poised for huge opposition rally
Thousands of anti-government protesters are expected to march through the Russian capital Moscow, demanding fresh elections and a new president.
The march comes after a day after police raided the homes of several prominent activists.
Last week, President Vladimir Putin signed a new law increasing fines for those who hold unsanctioned protests.
Mr Putin won a third presidential term in March despite protests over alleged fraud in December's parliamentary vote.
Steve Rosenberg reports.