SPARKS: China’s Underground Historians and Their Battle for the Future, by Ian Johnson By now, it is almost clichéd to compare political misrule to the dystopia that Orwell conjured through the story of the low-ranking functionary Winston Smith in “1984,” but so many aspects of the novel have come true in today’s China — from mass surveillance to fury-inciting demagogy to President Xi Jinping’s declaration that the Communist Party’s rule is “the conclusion of history” — that it may appear to preclude, as it ultimately did for Smith, the possibility…