Privacy from government snooping agencies has become a major issue especially for activists fighting against more government encroachment on their civil liberties. DNA research is providing another invasive tool for such agencies.
One can imagine law enforcement salivating at the prospect of turning a bloodstain into a name and address.If you are unfamiliar with this issue, as I was, I suggest you read this earlier article entitled "Genetic privacy" from Nature before you read this one.