Hence the title of Michael Savage's book, Liberalism is a Mental Disorder. And that attitude is why an estimate of 200 million dead from the political actions of totalitarian regimes during the 20th Century could be close to the truth.
Yes. Leftists cannot learn from this. They cannot understand that theirs is the murderous totalitarian mentality that has cause so much evil and tragedy in the past--that they are merely the 21st century recrudescence of Naziism, Stalinism, Pol Pot, Mussolini, Mao Tse Tung, et al. We know it. They cannot believe it.
They are blinded by hubris and denial--the stuff of tragedy.
They are dangerous and dangerously deluded.
They are convinced that they are right, morally superior, and of superior intelligence.
What they do not understand is that they are wrong, morally inferior, and stupid.
They are determined to drag us all down the well paved, well traveled Road to Hell!