Revolutionary barricades on Liteyny Prospekt, Petrograd, Russia, 27 February 1917. The February Revolution led to the abdication of Tsar Nicholas II and the collapse of imperial Russia. A provisional government was established which effectively shared power with the Bolshevik Petrograd Soviet. In October the Bolsheviks overthrew the provisional govenment and seized power themselves. Found in the collection of the State Museum of the Political History of Russia, St Petersburg.