Preface: A Universal Call for Conscience In every era, there are moments when silence becomes complicity. The Justice for Yu Menglong petition represents not merely the mourning of a single life, but a collective awakening — a reaffirmation of the universal human values of conscience, truth, and resistance to violence and authoritarian rule. It speaks to the enduring moral courage of ordinary citizens who, despite fear or suppression, continue to believe that honesty and comp