The whole war on terror and this bulk collection is predicated on stopping crimes before they happen. It's a giant catch 22.

Would stopping mass shootings and not-called-terorrism-but-domestic-terror be part of the use cases here? Like if you were to ignore some other laws and track gun ownership and purchases, maybe cross reference it with the use/prescription of certain medications and then cross reference that with anti-social posts on the internet or associations with certain call-themselve-patriots-but-really-hate-the-government type groups you might stop some mass shootings. Maybe save some actual lives.

It's a terrible rabbit hole to go down, we need to stop it all ASAP.