“The most effective way to destroy people is to deny and obliterate their own understanding of their history.”

George Orwell

And then what happens next is Rewriting :

It doesn’t matter what is the truth and what have you done. The question is what can you do to make people believe in your version of truth.

But at the end it doesn’t work like that due to one simple fact :

“The Truth still remains the Truth”

Best Regards