The October Revolution, also called the Bolshevik Revolution, was the second revolt of 1917. The first overthrew the imperial government and spelled the end of the more than 300-year rule of the Romanovs. The second, which began 90 years ago on October 24th, placed the Bolsheviks in power. Magnum presents the ways the Soviets celebrated the revolution and how they lived during the years of the USSR.

View Today's Pictures on Slate.