On 6 December 1876 , Plekhanov delivered a fiery speech during a demonstration in front of the Kazan Cathedral in St. Petersburg in which he indicted the Tsarist autocracy and defended the ideas of Chernyshevsky .
Plekhanov was one of the organizers of the first political demonstrations in Russia .
On 6 December 1876 , one delivered a fiery speech during a demonstration in front of the Kazan Cathedral in St. Petersburg in which Plekhanov indicted the Tsarist autocracy and defended the ideas of Chernyshevsky .
Plekhanov was one of the organizers of the first political demonstrations in Russia .