Police departments have been using predictive analysis for a very long time..

You're right

I can obviously see how this type of tech could be abused..

The problem is we have no way of knowing the preventive measures in place to ensure it will never be abused. Who is overseeing this like an ombudsman or 3rd party agency?

do you really not see that this could be used for good

Too many people focus on the good, which eventually leads to abuse eventually. That's the problem.