The truth about Minitru
Minitru goes through all their past records ever taken, they manipulate everything and everyone. Your rations may have been cut even when you are being told rations are higher than ever. They will make this "true". History will be rewritten to make all their lies line up, and if you question them for a second you're bound to be vaporized. The Party created the Ministry to make sure that their lives would not be exposed. Citizens of Oceania were allowed access to any document of history, however, these documents were not legitimate.
The Ministry of Truth has four departments; tele-programs, fiction, records, and pornography.