Angry Jesus writes:
"The Chicago Police Department is mis-applying epidemiological science (the study of entire populations) to target individuals in a real-life version of Minority Report. They have decided that it is a good idea to put people on a secret list based on a Big Data analysis of their social networks. But don't worry, it isn't racist or abusive because, Science!"
Which tallies exactly with what I said in my original comment. I don't believe this system is racist, but the mere absence of race as data being fed into it is not positive proof that it is not.