The really frightening thing about totalitarianism is not that it commits 'atrocities' but that it attacks the concept of objective truth; it claims to control the past as well as the future.
Every nationalist is haunted by the belief that the past can be altered. He spends part of his time in a fantasy world in which things happen as they should — in which, for example, the Spanish Armada was a success or the Russian Revolution was crushed in 1918 — and he will transfer fragments of this world to the history books whenever possible.
From the totalitarian point of view, history is something to be created rather than learned.
"The Prevention of Literature" (1946)