I think the core driving force behind the sex offender registry and the surrounding laws (beyond the law enforcement, politics, and money) is the total control over a group of people and which can be a model to encompass other groups of people and which can eventually be used to include general populations in every country in the world, thus bringing about the absolute control of people as seen in the book 1984. I don’t know who controls the world, but whoever does, wants to have the total control over the whole earth. Sex offenders are an easy target; mere sex offender label is enough to push average Americans to the days of Salem witch hunt. American people so easily forget that when the rights of one group of people is violated then that can be used as a precedence to cause the same fate to other groups. No one becomes safe because there is no shortage of bad labels, never was.