Defenestration must be climbing the charts of the top causes of death in Russia.
My guesses:
1. He was a Putin critic
2. He owed somebody a lot of money
3. He was tossed out by a jealous husband
4. He didn’t rule the way someone who paid him off wanted him to
5. He thought he could fly.
6. Suicide
Kazan is the capital of the Russian republic of Tatarstan.