https://phys.org/news/2018-07-police-crimes-criminals.html

A top concern, advocates say, is that the computer programs perpetuate the problem of minorities being arrested at higher rates than whites. If arrest and crime location data that show such biases are fed into the algorithms, they argue, police will continue targeting minorities and minority neighborhoods at higher rates.

Several groups and organizations have taken police agencies to court in an effort to find out what data is being fed into the programs, how the algorithms work and exactly what the end results are, including which people and areas are on the lists and how police are using the data.