What was the tsar's secret police called?

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Tags

1. #cheka
2. #called
3. #buttress
4. #police
5. #consolidated
6. #lenin
7. #institution
8. #relied
9. #bolsheviks
10. #secret
11. #first
12. #abolished
13. #regime
14. #political
15. #vladimir
16. #power
17. #december
18. #temporary
19. #beginning
20. #their
21. #strong
22. #established