Russian police have arrested more than two dozen people during an unauthorised protest in Moscow.<br /><br />The demonstration held at the end of every month with 31 days is meant to highlight the 31st article of the Russian Constitution which guarantees the right of free assembly. <br /><br />Among those detained was opposition leader, Eduard Limonov.<br /><br />Chanting “Russia will be free” and holding pictures of people protesters call political prisoners,demonstrators were led away – sometimes dragged and carried – by police officers and placed in waiting buses.<br /><br />Freedom of assembly is guaranteed in the constitution, but activists say the government restricts that right by requiring rally organisers to get official permits, which are frequently denied.