You may find agreement in the work of Eric Fromm, such as "The Anatomy of Human Destructiveness," and "Sane Society."

I agree, but the Cult is not exclusively populated by people claiming to be on some nebulous Left. It is The Cult of Might Makes Right, and membership is exclusive to those who propagate the lie the inspires aggressive violence as a means to gain power over people.

"But let us not forget that violence does not live alone and is not capable of living alone: it is necessarily interwoven with falsehood. Between them lies the most intimate, the deepest of natural bonds. Violence finds its only refuge in falsehood, falsehood its only support in violence. Any man who has once acclaimed violence as his METHOD must inexorably choose falsehood as his PRINCIPLE. At its birth violence acts openly and even with pride. But no sooner does it become strong, firmly established, than it senses the rarefaction of the air around it and it cannot continue to exist without descending into a fog of lies, clothing them in sweet talk. It does not always, not necessarily, openly throttle the throat, more often it demands from its subjects only an oath of allegiance to falsehood, only complicity in falsehood."
Alexandr Solzhenitsyn, Nobel Lecture in Literature, 1970