Some excerpts from The Affirmative Action Empire: Nations and Nationalism in the Soviet Union, 1923–1939

Very good book on soviet nationalities policy using archival research

This one does a good job of showing how rapidly the (centre) of the party shifted lines on nationalism

Russian opposition to affirmative action programmes was pretty strong

Nationality could be shockingly arbitrary and sudden (and often informed by politics)

Stalin begins to turn towards supporting Russians

collectivisation interacted badly with the nationalities policy

The degree of internal conflicts within the party and soviet bureaucracy was also a huge part of the book.

Ethnic cleansings going on, and there's still tons of affirmative culture programmes running. Weird contradictions