If we really believe in the basic principles of individual liberty that are hypothetically core American values (or even just the idea of "first, do no harm"),

If we really believe in the basic principles of individual liberty that are hypothetically core American values (or even just the idea of "first, do no harm"), then it would imply that these tools should be optimized for 100% precision, even at the cost of terrible recall. But if you're trying to market your stuff to law enforcement agencies, I'm guessing you're instead incentivized to optimize for recall, even at the cost of terrible precision. Because, probably with the best of intentions, that's what they think they should be doing. But we've got basically the entire history of forensic "science" to demonstrate just how poorly the police tend to understand some of these basic statistical principles.