I found this discussion thought provoking and a bit frustrating. I think I may have had some gaps about the severity of this problem but I think there was only a bit of a throwaway consolation discussion to privacy advocates. I think there are a lot of great reasons why privacy might trump crime prevention, but those reasons we not addressed here. (Freedom from government presecution, protection from data breaches/hacking, abuse of systematic image or video scanning for irrelevant purposes, employee misconduct etc.)