What a day for tyrants!

Perhaps someone could consult a numerologist to explain why so many tyrants had success on this day.

1494 d'Medicis take over Florence. Aside from a few things like patronizing one of the great artistic periods in the history of man, they also tyrannized most of Europe for another two hundred years.
1799 Napoleon leads the coup that ends the French Directorate, and proceeds to kick ass way beyond the point where it does him any good. Defeat ensues, thank Fortuna.
1917 Stalin enters the provisional government of the USSR. And there was much rejoicing (in the Ukraine, especially).
1938 Kristallnacht. 'Nuff said.
1985 Gari Kasparov becomes the youngest World Chess Champion in history, and tyrannizes the game for the next 15 years.