The Yamal Peninsula in northwestern Siberia is one of the few remaining places on earth where a nomadic people retain a traditional culture. Here in the tundra, the Nenets--one of the few indigenous minorities of the Russian North--follow a lifestyle shaped by the seasonal migrations of the reindeer they herd. For decades under Soviet rule, they weathered harsh policies designed to subjugate them. How the Nenets successfully resisted indoctrination...