I am baffled as to how so many Western leftists are either shitlibs, revisionists, or ultras and rarely any principled leftists? Does labor aristocracy have to do with this? My candidate for the start is when the CIA started funding the glowies (i.e. the Anti-Stalinist left).
Bernstein started it way back in the day and it has been a steady process of decline ever since. In a short, glib answer to a serious question