On a typical evening in the heart of Paris, Taha Siddiqui can be found at his bar, greeting customers and pouring drinks. During busy nights, he’s organizing events there, with an Afghan poet reading her work, anti-war Russian musicians in a punk band, or a director sharing their documentary — all, like him, finding refuge in France. But long before he became a bar owner, Siddiqui was one of Pakistan’s most high-profile investigative journalists, determined to expose corruption and go...