These people's morbid obsession with Marxism becomes easier to understand when one considers the following passage from one of their scriptures, i.e., Mein Kampf:
The Jewish doctrine of Marxism repudiates the aristocratic principle of Nature and substitutes for it the eternal privilege of force and energy, numerical mass and its dead weight. Thus it denies the individual worth of the human personality, impugns the teaching that nationhood and race have a primary significance, and by doing this it takes away the very foundations of human existence and human civilization. If the Marxist teaching were to be accepted as the foundation of the life of the universe, it would lead to the disappearance of all order that is conceivable to the human mind. And thus the adoption of such a law would provoke chaos in the structure of the greatest organism that we know, with the result that the inhabitants of this earthly planet would finally disappear.
Should the Jew, with the aid of his Marxist creed, triumph over the people of this world, his Crown will be the funeral wreath of mankind, and this planet will once again follow its orbit through ether, without any human life on its surface, as it did millions of years ago.
There you go. To their mind, Marxism is not merely a school of economics, sociology, or politics: it’s the mother of all Jewish ideological plagues, which would end not only human civilization, but humanity itself. (And let's not forget the indispensable role that the MARXIST Soviet Union played in bringing about the downfall of the Third Reich.) No wonder they fear and hate it so.