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Re:How Palantir Is Taking Over New York City by blackbagboys on Friday September 23, 2016 @12:56PM (#12566062)
There are numerous reasonable proxies; locations of murders, reported assaults or robberies, calls to the police department reporting a possible crime, etc.
Re:How Palantir Is Taking Over New York City by dangerlibrary on Friday September 23, 2016 @01:19PM (#12566286)
Is that what is actually being used, though?

I suspect there is no way for the public to know.