Whistle-blowers are often ostracised or discriminated against. Yet, there are people who publicly expose wrongdoing in an organisation even when doing so comes at great risk to themselves.
On the second last day of last year, Dr Li Wenliang, an ophthalmologist at Wuhan Central Hospital in China, used a social messaging app to warn a group of his medical school classmates about the coronavirus outbreak (though at that time, it was still a mysterious infection).
The local police responded quickly. They tried to intimidate and muzzle Dr Li. They accused him of scaremongering and made him sign a statement to declare that his action constituted "illegal behaviour".
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