On Wednesday, September 21, Russian President Vladimir Putin announced a 'partial mobilisation' of some 300,000 reservists with immediate effect in the wake of setbacks suffered by the Russian military in its raging conflict with Ukraine.
As a result, the anti-war opposition group Vesna called for widespread protests.
Vesna called its action 'No to mogilisation -- a play on words, because mogila in Russian means grave.
Scores of arrests were reported from Moscow and St Petersburg, Putin's home city.
The Moscow prosecutor's office on Wednesday warned that calls on the Internet to join unauthorised street protests, or participation in them, could incur up to 15 years in jail.