It’s spiritual.
I am leaning towards that (see the post above about Whittaker Chambers)
It is a religion. It is the way they approach everything, from race, economics, international relations, global warming, the environment...
Hating Trump.
You have to be a believer or an apostate. In this, the Left has much in common with radical Islam in their attitude towards apostates.
It is what will empower them to destroy those who disagree with them if they ever openly assume full control of the levers of power and remove our right to defend ourselves.
It is another reason why the Rittenhouse trial was in no way trivial-that is just another avenue of attack on our right to self defense.
They have been working on eliminating the means for some years now.