What happens
The tribunes orchestrate Coriolanus's downfall in the Forum. After coaching the crowd to cry "traitor," they accuse him of plotting tyranny. Coriolanus explodes at the word, calling the people diseased and cursing them. He refuses to control his rage or ask for mercy. The tribunes seize on his outburst as proof of treason, and despite senators' pleas for calm, they sentence him to banishment from Rome, to be thrown from the Tarpeian rock if he returns.
Why it matters
This scene pivots the entire play. Coriolanus enters the Forum as a successful politician—the Senate has already approved him as consul—but leaves as a convicted traitor facing execution. The tribunes' strategy is surgical: they don't argue policy or virtue, they simply bait him. By calling him a traitor, they activate the one thing Coriolanus cannot control: his rage. He responds with contempt for the people, curses their power, and announces he'll never bend to them. In doing so, he proves the tribunes' case not through evidence but through his own words. The machinery of democracy turns against him precisely because he refuses to play its game.
Menenius and Cominius watch helplessly as a man they love destroys himself through honesty. When Coriolanus says "I banish you," he reveals the core conflict: he sees the people as a disease, not as citizens with legitimate claims. The tribunes understand power better than he does—they know that in a republic, perception is law. His integrity becomes his executioner. By the scene's end, Rome has officially transformed from a city that needed him into a city that fears him. His banishment is voted by the same people who hours earlier were prepared to make him consul. The play has moved from political theater to tragedy: a man too noble for the world he lives in.
