President Xi Jinping is waging a war on a virus more deadly to the Chinese Communist party than SARS-CoV-2 — free speech. To his horror, the demand for it not only refuses to die, it’s surreptitiously mutating to evade all his attempts to destroy it. The source of the contagion? China’s courageous doctors, too well-educated to silently agree to be cannon fodder in the fight to contain coronavirus.