Source: Marx Memorial Library (MML)
Reference: PHOTO_SUB_SOVIET_UNION_1917_REVOLUTION+CIVIL_WAR_PERIOD

This particular image is actually from a 1920 reenactment of the revolution in Petrograd, on its third anniversary. It was performed live before a mass of spectators. In reality, the Storming of the Winter Palace took place in the middle of the night and was not quite as dramatic as it has been usually depicted since.