The Athenians used a system of government called representative democracy. This type of democracy entails that everyone has the righ to vote, and can indirectly vote through an elective representative of their beliefs. This is the exact model of government that is used in the United States (with Congress).
In 1478, the Catholic Monarchs began the famous Inquisition to purify Catholicism in all their territories. The Inquisition was established to act as a tribunal to identify heretics and bring them to justice.