Funnily enough, "self-criticism" is an idea much in vogue in Marxist countries, but there it is subordinated to ideological considerations and must serve the State, and not truth and justice in men's dealing with one another. The mass State has no intention of promoting mutual understanding and the relationship of man to man; it strives, rather, for atomization, for the psychic isolation of the individual. The more unrelated individuals are, the more consolidated the State becomes, and vice versa.
In the quote from C.G. Jung's "The Undiscovered Self," the author critiques the concept of self-criticism as it is utilized in Marxist societies. He suggests that, contrary to its potential to promote personal truth and justice among individuals, self-criticism there serves the interests of the State. This process is inherently tied to ideological goals, limiting its capacity to foster genuine understanding and solidarity among people.
Furthermore, Jung argues that the mass State's agenda is to encourage isolation rather than connection among individuals. By fostering disconnection, the State aims to solidify its own power and control. Thus, in such a societal structure, the more fragmented and isolated individuals become, the stronger the State appears, undermining the fundamental human relationships that cultivate a healthy society.