This is excellent, isn't it?
I especially liked this part:
What post-truth does is it paves the way for regime-change. If we don't have access to facts, we can't trust each other. Without trust, there's no law. Without law, there's no democracy. So, if you want to rip the heart out of a democracy directly - if you want to go right at it and kill it - what you do is you go after facts.
And that's what modern authoritarians do. Step one, you lie, yourself - all the time. Step two, you say it's your opponents and journalists who lie. Step three, everyone looks around and says, "What is truth? There is no truth." And then resistance is impossible and the game is over.