Ancient Greece - Ostracism

Ostracism was a procedure under the Athenian democracy in which any citizen could be expelled from the city-state of Athens for ten years. While some instances clearly expressed popular anger at the citizen, ostracism was often used preemptively. It was used as a way of neutralizing someone thought to be a threat to the state or potential tyrant. It has been called an 'honourable exile' by scholar P.J. Rhodes