Or it just might just make things worse.
Chicago's experiment http://mimesislaw.com/fault-lines/chicagos-predictive-policing-fail/12362
You could find many other criticisms of Chicago's attempt to harness the power of data to reduce crime on Google if you are so inclined.
Or read about the proprietary systems that determine blacks need harsher sentences than whites at sentencing because they a going to reoffend but defense council isn't allowed to look at the algorithm that makes the determination. http://blogs.wsj.com/law/2016/07/13/court-judges-can-consider-predictive-algorithms-in-sentencing/
Lots of ink spilled on that as well.
It might be discussed in the article but pay wall.