Honestly, I have no problem with a database of public images showing/tracking people's public actions. It used to be in a small town you knew who was good and bad by their actions. With the population explosion, the only way we have a practical means to return to that is with facial recognition databases.
Pray your doppelgangers don't ever break the law.
They have, and I went to court for it, and won. It's not easy, but stating that any system that can make mistakes is not worthwhile is frankly bad logic. Can police make mistakes today?