Unfortunately, a symptomatic diagnosis is pretty straightforward (for some of us at any rate), it’s the etiological explanation of the precise social psychological mechanisms and consequent prescription or therapeutic regimen (one whose possible consequences or side-effects don’t outweigh its possible curative value) that present seemingly insurmountable difficulties for the would-be Marxist humanist or Gandhian-like revolutionary.
Speaking of Fromm, I should mention two works essential toward assessing what is living and dead in his corpus (no pun intended): Daniel Burston, The Legacy of Erich Fromm (Harvard University Press, 1991), and Lawrence J. Friedman (assisted by Anke M. Schreiber), The Lives of Erich Fromm: Love’s Prophet (Columbia University Press, 2013). Friedman’s book also recognizes Fromm’s roles as a prominent public intellectual and political activist on the Left. He remains my favorite member of the Frankfurt Institute of Social Research (his contributions to which were ‘substantial,’ in later years among its most productive scholars). In stark contrast to “Horkheimer and most of his colleagues” who, upon settling in New York, “...continued to perceive themselves as European intellectuals, persisted in writing for a specialized scholarly audience, and preferred to communicate in German,” Fromm proceeded to master English, developing a “capacity to write graceful prose...[while working to become] accessible to the general American reading public.”