The name of this thread is a real give-away to the lack of understanding inherent in the position. An alternative would be "DNA -- why not shield the individual citizen? "   What you are missing is that when a government seeks to manage its whole populace as though they were criminals before the fact they violate the strongest resource they have, as well as the trust of their people. The risk of NOT catching a criminal is much, much less dangerous than the risk of destroying the spirit of a civilization and its highest standards of civic recognition of the individual as the source of all power.

A