Earlier quoted context omitted.
Yeah, this isn't science fiction or conspiracy theory anymore. Several high-profile cold cases have gone hot as police have been trawling the datasets submitted to 23AndMe et al and investigating the family trees of persons whose DNA is similar-ish to the samples in unsolved cases. [0] The results are mainly bupkis anyway, and you're paying for the privilege of having police agencies across the country (world?) give…
It's all tradeoffs, I want some privacy, but I also like crimes being solved. In fact, I'd see that as a benefit even if I'm related to criminals. Of course this assumes it is used correctly and fairly, which is the hard part.
Monitoring citizens minds would be a tremendous boost to solving crimes. This rule will be equitably applied to all citizens by a fair and principled government excepting special groups like oppressed minorities or members of the government/military themselves.