Historical reconstruction (from the creators of "The House of Romanov. 1613-1917").
The Decembrist revolt or the Decembrist uprising took place in Imperial Russia on 26 December 1825. Russian army officers led about 3,000 soldiers in a protest against Tsar Nicholas I's assumption of the throne after his elder brother Constantine removed himself from the line of succession. Because these events occurred in December, the rebels were called the Decembrists (Dekabristy).
Though defeated, the Decembrists did effect some change on the regime. Their dissatisfaction forced Nicholas to turn his attention inward to address the issues of the empire.