The fact that cctv is digital and relatively inexpensive as a crime solving tool is now shown by the many, many countries using the system and the aid to solving crime as well as reducing crime. We already have the cameras in so many places we don't even see them, and putting them in parking lots, shopping areas, near schools, etc. would be little more noticeable. To say that someone is always watching you as you go about your daily business which infringes on your privacy is not on as no one looks at these cameras unless a crime has been committed at that time in that particular area. If you were a victim of a crime I feel sure you would be pleased that it had been caught on cctv in aiding the police to catch the crooks.
We must ask ourselves why we can't do this now because the other question to ask ourselves is what will happen if we don't. Do we really want this crime to continue and increase, or are we willing to get our city tough on crime and the reputation that criminals are not wanted here.