y'a aussi kaczinsky qui a un avis très pertinent la dessus:
7. But what is leftism? During the first half of the 20th century leftism could have been practically
identified with socialism. Today the movement is fragmented and it is not clear who can properly
be called a leftist. When we speak of leftists in this article we have in mind mainly socialists,
collectivists, “politically correct” types, feminists, gay and disability activists, animal rights
activists and the like. But not everyone who is associated with one of these movements is a
leftist. What we are trying to get at in discussing leftism is not so much movement or an ideology
as a psychological type, or rather a collection of related types. Thus, what we mean by “leftism”
will emerge more clearly in the course of our discussion of leftist psychology. (Also, see
paragraphs 227-230.)
8. Even so, our conception of leftism will remain a good deal less clear than we would wish, but
there doesn't seem to be any remedy for this. All we are trying to do here is indicate in a rough
and approximate way the two psychological tendencies that we believe are the main driving force
of modern leftism. We by no means claim to be telling the whole truth about leftist
psychology. Also, our discussion is meant to apply to modern leftism only. We leave open the
question of the extent to which our discussion could be applied to the leftists of the 19th and early
20th centuries.
9. The two psychological tendencies that underlie modern leftism we call “feelings of inferiority”
and “oversocialization”. Feelings of inferiority are characteristic of modern leftism as a whole,
while oversocialization is characteristic only of a certain segment of modern leftism; but this
segment is highly influential.
FEELINGS OF INFERIORITY
10. By “feelings of inferiority” we mean not only inferiority feelings in the strict sense but a whole
spectrum of related traits; low self-esteem, feelings of powerlessness, depressive tendencies,
defeatism, guilt, self-hatred, etc. We argue that modern leftists tend to have some such feelings
(possibly more or less repressed) and that these feelings are decisive in determining the direction
of modern leftism.
https://web.cs.ucdavis.edu/~rogaway/classes/188/materials/Industrial%20Society%20and%20Its%20Future.pdf