That’s why. It’s true. He who controls the past does control the future. He is the most powerful person in any relationship — and that is all a society is, a set of relationships. That is why authoritarians lie about the past, but tell the truth about the future.
Except that the Trump administration is erasing all evidence and silencing all discussion of global warming among federal sites and agencies. Your line about lying about the past and telling the truth about the future is clever and sounds nice, but it’s not accurate. The day Trump says that global warming is ultimately going to ruin civilization if we don’t do something to curtail it is the day I’ll believe you about Trump telling the truth about the future.