I used to wonder why New York subways were somehow a high crime area. I thought, surely they're such small closed places that if there's a crime, the police can just block the exits and check everyone leaving, or look at the CCTV footage to identify them. But then I found out that they don't do that! Americans are so concerned about privacy, they let themselves get robbed and murdered every day.

It's clear that they don't trust their own police. That's perhaps the real problem. If they could be made trustworthy like in many other countries, people would probably be happy to have murders solved through video footage, cellphone locations, etc. It amazes me that even one person on here thinks this is a bad idea. Real killers would have got away otherwise. This isn't some wild NSA anti-terrorism dragnet, it's just normal police work collecting normal evidence specific to the crime.