Cameras don't deter crime.
being able to easily identify and arrest the perps sure does!
Imagine on you local nightly news seeing a HD quality video of a robbery where you can easily recognize everyone commenting the crime, instead of a fuzzy blurred vcr video where you not even sure what is happening much less who is committing the act.
I would have all law enforcement agencies purchase the year books of all local schools and thne use facial recognition software to instantly ID all the perps and have them in jail before the day was up.