A blank spot on a digital map can signal much more than a gap in data - it can mean something is being intentionally hidden. Sharing the remarkable discovery of massive alleged detention camps in Xinjiang, China, Pulitzer Prize-winning journalist AlisonKilling shows how governments can obscure human rights abuses by limiting journalist access on the ground - and calls for more reliable open-source data (like satellite and social media imagery) to shine a light on the world's darkest places.
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