Over the weekend, a leader of the Mexican Workers Party (the PT) sent a letter to Kim Jung Un, praising him for his “great achievements” and declaring that “progressives from the whole world feel great admiration” for him. The letter even suggested that the North Korean leader was “widely acclaimed as the man of the year.” Ridiculousness aside, this is in a way symptomatic of the broader problems plaguing the fragmented and fractious Mexican left. Any reform attempts to move in a social-democratic direction inevitably run into these more retrograde elements following often outmoded doctrinaire party lines. Those wondering why the more left-centrist PRD has recently tended to align with the right-leaning PAN and PRI need look no further than the ideology of those to the PRD’s left.