CNN — The Chinese government has built up the world’s largest known online disinformation operation and is using it to harass US residents, politicians, and businesses—at times threatening its targets with violence, a CNN review of court documents and public disclosures by social media companies has found. The onslaught of attacks – often of a vile and deeply personal nature – is part of a well-organized, increasingly brazen Chinese government intimidation campaign targeting people in the United States, documents show. The US State Department says the tactics are part of a broader multi-billion-dollar effort to shape the world’s information environment...