“On August 25, 1968, eight activists staged a daring protest at the same square after Soviet tanks rolled into the former Czechoslovakia to crush the ‘Prague Spring’ reformist uprising. Most of the protesters were beaten up, put on trial and sentenced to prison and exile. Others were diagnosed with mental illnesses. In a move commemorating that protest, a dozen activists including Natalia Gorbanevskaya, who took part in the original rally 45 years ago, gathered to call for greater freedom. Minutes later, most of the activists were detained by police in front of tourists milling around Moscow’s top landmark. Police confirmed that 10 people had been detained for taking part in an unsanctioned protest.”
http://www.rawstory.com/rs/2013/08/25/russia-arrests-10-people-for-commemorating-prague-spring/