Martin Luther's 95 Theses

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The German monk who began a religious uprising; the book that made us think of humans as animals; how the murder of a Brazilian journalist by the secret police became a symbol of Brazil's military brutality; plus the Lebanese architectural dream that was overtaken by war and the fight that ended sex censorship online. Photo: A portrait of Martin Luther by Lucas Cranach the Elder on display at the German Historical Museum in Berlin, Germany (Sean Gallup/Getty Images)