The Chinese Party Congress set to open on Sunday already has Xi Jinping on edge. These gatherings happen only every five years, and this time it is expected to ratify his plan to void term limits and make him in effect dictator-for-life. While it is impossible for outsiders to know the extent of opposition to Xi, almost certainly there are factions that are dead set against this move, based on personal and regional loyalties if not on opposition to his policies and intention to make himself another Mao Zedong. Thus, a demonstration attacking Xi that broke out in an affluent...