Established by the Catholic Church in 1231, the Inquisition continued in one form or another for almost seven hundred years. Though associated with the persecution of heretics and Jews-and with burning at the stake-its targets were more numerous, its techniques were more ambitious, and its effect on history has been greater than many understand.
The Inquisition pioneered surveillance, censorship, and "scientific" interrogation. As time went on, its methods and mindset spread far beyond the Church to become tools of secular persecution.
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