The power is when you combine the different databases and build a profile of the person. It is very similar to how advertisement companies like Google build up profiles of customers(gmail,search behavior,dns name resolution tracking,cookie tracking) only in a different field.
It is probably even more powerful when you combine physical behavior with online behavior-
Yes, but if those individuals were actually more likely to commit crime, the AI would learn those things anyhow, leaving us with the question: if a specific demographic is considerably more likely to commit crime, and the AI picks up on it, is the AI 'racist'? Because racism is a moral judgement, moreover, the intersectionalists would indicate that it also requires the notion of 'power'.
This is not some novel issue I think and will fast become a real ethical dilemma.