A memory hole is any mechanism for the deliberate alteration or disappearance of inconvenient or embarrassing documents, photographs, transcripts, or other records, such as from a website or other archive, particularly as part of an attempt to give the impression that something never happened. The concept was first popularized by George Orwell‘s 1949 dystopian novel Nineteen Eighty-Four, where the Party‘s Ministry of Truth systematically re-created all potentially embarrassing historical documents, in effect, re-writing all of history to match the often-changing state propaganda. These changes were complete and undetectable.From Wikipedia
Example of a memory hole
In the 1950´Norman Dodd served as chief investigator for the Special Committee on Tax Exempt Foundations (commonly referred to as the Reece Committee), which was chaired by U. S. Congressman B. Carroll Reece. Dodd was known primarily for his controversial investigation into tax-exempt foundations.
Norman Dodd was interviewed, shortly before he died, by the journalist G. Edward Griffin. In the interview, he revealed a conspiracy. He told that some of the biggest tax-exempt foundations in the Unitd States (the Carnegie Endowment for International Peace, Ford Foundation, and the Rockefeller Foundation, among others), secretly sought ways to warp American teaching of history through explicit control of the education system in the United States. They were giving money to scholarships in order to pick out some of these pupils and make them re-write history seen in a different light that could be a benefit for these foundations to in order implement their geopolitical plans.