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!"
No mod points to give, OP isn't trolling y'all.
Arguing with xkcd? So it has come to this.