From Wikipedia

Art of Russia

Part Two
Roads to Revolution

Realism came into dominance in the 19th century. The realists captured Russian identity in landscapes of wide rivers, forests, and birch clearings, as well as vigorous genre scenes and robust portraits of their contemporaries. Other artists focused on social criticism, showing the conditions of the poor and caricaturing authority; critical realism flourished under the reign of Alexander II, with some artists making the circle of human suffering their main theme. Others focused on depicting dramatic moments in Russian history. The Peredvizhniki (wanderers) group of artists broke with Russian Academy and initiated a school of art liberated from Academic restrictions. Leading realists include Ivan Shishkin, Arkhip Kuindzhi, Ivan Kramskoi, Vasily Polenov, Isaac Levitan, Vasily Surikov, Viktor Vasnetsov and Ilya Repin.

By the turn of the 20th century and on, many Russian artists developed their own unique styles, neither realist nor avante-garde. These include Boris Kustodiev, Kuzma Petrov-Vodkin, Mikhail Vrubel and Nicholas Roerich.