I'll leave you with these Cliffs Notes about the Ministry of Truth in Orwell's
Nineteen Eighty Four:
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As with the names of the other ministries in Oceania, the name Ministry of Truth means the opposite of what it says. If the Ministry of Love is the place of torture and hate, the Ministry of Truth is where lies are manufactured.
Winston works here, rewriting old news articles to reflect the Party's latest version of reality and throwing the old articles down a "memory hole" where they are incinerated. The Ministry of Truth reflects the Party's belief that power is the only truth and that those with the power can make the "truth" into whatever they choose.
The power of Minitrue, as it is called, shows in the enormous glittering white pyramid of its building, which towers over and dominates a landscape of sagging houses and rubble. A hint of what nonsense-manufacture goes on inside might be suggested by the three slogans of the Party emblazoned on it:
WAR IS PEACE/ FREEDOM IS SLAVERY /IGNORANCE IS STRENGTH
Minitrue supposedly has 3,000 rooms above ground level and 3,000 below, a testament to the resources the government puts into manufacturing its own version of reality, from rewriting history to producing propaganda to trying to remove as many words as possible from the English language to reduce people's ability to think. Its main role is to help control the population through misinformation, outright lies and lack of information so that the state can maintain total power over the people.
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...and do you know who likes this book and recommends it to his students?
Bishop Williamson.