Nikolay Vladimirovich Mezentsov was a Russian statesman, chief of police, adjutant general, and member of the State Council of Imperial Russia, assassinated for having advocated harsh punishment again
Sergei Mikhailovich Stepniak-Kravchinskii, known in 19th-century London revolutionary circles as Sergius Stepniak, was a Russian revolutionary of Ukrainian descent.
Stepniak in 1870
The Career of a Nihilist by Stepniak, published in 1889