Chinese leaders using hardline tactics to stifle dissent. Riding a Nationalist fury, once unleashed can be dangerous to the ones that created it. We saw this rampant destruction during the disputes with Japan.

HONG KONG — They pounce on bloggers who dare mock their beloved Chairman Mao. They scour the nation’s classrooms and newspapers for strains of Western-inspired liberal heresies. And they have taken down professors, journalists and others deemed disloyal to Communist Party orthodoxy.

China’s Maoist ideologues are resurgent after languishing in the political desert, buoyed by President Xi Jinping’s traditionalist tilt and emboldened by internal party decrees that have declared open season on Chinese academics, artists and party cadres seen as insufficiently red.