In Brazil this week, the Supreme Court moved to remove the nation's federal police chief — a decision that cuts to the heart of a long-simmering question about who truly governs. President Lula, refusing to accept the court's unilateral reach into executive authority, filed an immediate appeal, transforming a personnel dispute into a constitutional reckoning. The confrontation reflects a deeper tension that democracies perpetually navigate: the boundary between judicial independence and executive sovereignty, and what happens when each branch believes the other has crossed it.