Learn why the logic behind sex offender registries, a system already proven ineffective and harmful, has quietly expanded across the country to include a wide range of other convictions. Despite decades of research showing that public registries do not reduce crime [1], [2], [3] all 50 states and D.C., still maintain sex‑based registries, and at least 22 states and D.C. now operate additional registries for offenses such as violent crimes, drug‑related convictions, arson, domestic violence, animal abuse, child abuse, gang affiliation, and even white‑collar crimes. Some states have gone further, creating registries for people prohibited from owning firearms, individuals with multiple DWIs, and even “dangerous dogs.”