The Foundations of History Tend to Shake: could the Holocaust fade away?

     The last of the surviving veterans of World War II are making their passage from this world. Also, the last of the survivors of the Holocaust. Together, this means that -- out of the many thousands of direct and indirect witnesses to the atrocities of the Holocaust -- very few remain and soon there will be none still alive.
     So, why does that make a difference? It is recorded in history and references are still taught and read. It happened, has been very well documented and proven, and is a tragedy from which we can learn for many years. Right?
     Alas, such is not necessarily the case. History is always in the process of being rewritten. Sometimes it is a result of more information coming to light -- excavations, first-hand documents, physical proofs and artifacts. Sometimes it is a matter of documents and artifacts being lost or deliberately destroyed or suppressed and then denied.
     At its best, history is a tiny slice of what has happened at a particular time. Choices are made as to what to include and what to omit.  History, or "His story", tends to focus on males throughout history -- such that women's accomplishments are forgotten, overlooked, or attributed to men associated with them. Histories are also "written by the winners" and the losers of wars and other confrontations often have their records destroyed or omitted -- certainly they are de-emphasized. Also, the history writers make choices from the materials available. Who, and what, is "important"? Do they talk about the war leader or do they talk about the woman organizing and leading the cooks to feed the army (or the family)? Is the life of the baker considered to be as important as the Duke? Do the details of the life of a peasant get equal emphasis to that of the local feudal lord? Even during peacetime, the accounts and records will be more in depth for those of the ruling segments.
     At its worst, history can become fantasies to support the current people in power. Perhaps out of shame, genocides, massacres, and evils done by humans to other humans (such as slavery) have a great tendency to be obscured or their realities warped. Some people try to "clean" history -- change the language used within books, change scenarios and such so that it meets present-day standards. That is also a method of falsifying history. A third category is to deliberately create fake documentation to support misinformation that the person, or group, would like to present as the truth.
     A very active and well-known Anti-Semite wrote a "scholarly" book concerning his anti-semitism. At first reading, it looks very well-researched, objective, and persuasive. It is not until the "references" are further checked that the fabrication becomes clear. The references are "circular references". The references are to people and their works who then refer back to the author or to other people to whom he references. In other words, the work supports itself by having a group of people wanting to present a falsified world view support, and "authenticate", each other. There is no connection to real world events or first-hand accounts. It is all a built up fantasy that SOUNDS like it has a basis in fact.
     So, with history's inherent limitations and vulnerability to falsification, how CAN valid history be protected? To quote Pilate, from the book of John, "What is truth?"
     There isn't an easy answer. History can never present the full truth -- it is inherently limited by access to, and choices from, data. Constant vigilance is needed to prevent deliberate, unsubstantiated, changes to history and acceptance of falsified data. The primary defense that exists is a solid educational background for the general citizenry -- to allow them to judge, to research, and to understand (such as going deeply enough to locate circular references).