Верховный Суд Российской Федерации
In 1906 Petrażycki was elected to the ill-fated First Duma as a member of the Constitutional Democratic Party. When the legislature was dissolved after a few months, he was convicted and incarcerated for his protests. He was appointed to the Supreme Court of Russia in 1917, but had to flee the country when the Bolshevik revolution succeeded. He found a new home in Poland and became the first professor of sociology at Warsaw University in 1919.