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Cheka, the first Soviet secret police force, is founded.

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Cheka
Soviet secret police (1917–1922)
The All-Russian Extraordinary Commission, abbreviated as VChK, and commonly known as the Cheka, was the first Soviet secret police organization. It was established on 20 December [O.S. 7 December] 1917 by the Council of People's Commissars of the Russian SFSR, and was led by…Source: Wikipedia (CC BY-SA)
Soviet Union
Country in Eurasia (1922–1991)
The Union of Soviet Socialist Republics (USSR), commonly known as the Soviet Union, was a transcontinental country that spanned much of Eurasia from 1922 until it dissolved in 1991. During its existence, it was the largest country by area, extending across eleven time zones and…Source: Wikipedia (CC BY-SA)