Jeffrey Wasserstrom is the Chancellor's professor of History at the University of California, Irvine and the author of "Vigil: Hong Kong on the Brink."
Opinion
Hong Kong's protest movement has made a difference for the world
Despite failures at home, demonstrators advanced the struggle against autocracy
A protester holds up five fingers to represent the five demands of 2019 demonstrators: their struggles have emboldened and influenced activists around the globe. © Reuters
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