If you're in America, that would (arguably) be a violation of your constitutional rights. Basically, the gov't isn't supposed to bother you until you committed a crime (until they have reasonable suspicion & a warrant or are in hot pursuit). The same thing bothers me about databases, surveillance, biometrics, TSA, stop-and-frisk: the government has no business treating me like a criminal, collecting my information, etc. until they've got a warrant.
Three strikes doesn't seem to be a violation of rights, and it simply makes sense. Removing bad people will improve the community. Some people simply will not abide by the rules of civilized society, and it is a dangerous mistake to pretend otherwise.