The lesson from the 1917 Russian Revolution is that the most ruthless are the ones who win in times of chaos.
Certainly, despite their name, the “Bolsheviks” were but a minority of those who opposed the Czar....and they didn’t immediately gain power after the Czar’s abdication, but they ultimately won.
The Black Russians (Marxists) were worse than the Bolsheviks. The didn’t win.
For the record, I think the “crisis” is over now anyhow. Crimea is Russia, and that will be that.
Time will tell I suppose.