The Word For World Is Forest by Ursula K. Le Guin (1972)
Finished: Sometime in July
After colonizing a small forest planet called Athshe, humanity immediately enslaved the peaceful natives, and began clear cutting the forests for lumber. One Athshean stages a violent rebellion to free his people and save his planet but in the process he must introduce the concept of mass violence to his once peaceful culture.
This book was really good! 10/10 science fiction. Written in 1972 but until I read the back cover I assumed it had been written this year. Thrilling. Beautiful. Heart-wrenching. A clear vivid world populated with real people.