The arrival of the novel coronavirus in Munduruku territory, in the heart of the Brazilian Amazon, has threatened the lives of the group, and its entire culture. COVID-19 took the life of an important Munduruku leader, bringing both sadness to an embattled people and hampering language revitalization efforts. But the Munduruku are a warrior people defined by their fierceness and tenacity. They have approached this struggle as they have all their battles, whether against miners, loggers, and invaders of a different stripe: without reservations.