Instead of wasting millions on maintaining registry, money can be spent on research and education. When we look at the registry in most cities we find there is someone within every half a mile. Soon we will be offenders listed in every block of a city.
Any security system that raises false alarm is as good as no security at all. People starts to ignore alarms when they realize there are false alarms.
Registry should be reformed. Entry to registry should be selected by something like a parole board. Experts should evaluate who should be in the registry, irrespective of the nature of the crime.