One reason that the Left is so interested in the control of history is that it is perfectly aware of the murderous failures of the past and intends to repeat them, "better" this time, and does not want people to see them as a warning. You can't actually wipe out the past, but you can wipe out the bourgeoisie who remember it and keep the next generations from ever learning that past or, through poverty and terror, becoming that bourgeoisie. That is the only way to ensure a slave population.
+1
See Post #18
Sure as I know anything, I know this - they will try again. Maybe on another world, maybe on this very ground swept clean. A year from now, ten? They'll swing back to the belief that they can make people... better. And I do not hold to that. So no more runnin'. I aim to misbehave.
Serenity