Thousands rally for political prisoners in Moscow Thousands gather in Moscow for a demonstration demanding the release of opposition protesters prosecuted in recent months. Police estimate a turnout of 20,000 at the Sakharov Avenue in central Moscow about half an hour after the start of the protest, which was authorised. The demonstrators chanted "let them go" and brandished placards demanding a halt to "repressions" of opposition protesters. IMAGES AND SOUNDBITES