I’m tryin’ to look at this from a legal standpoint.
If Cheesesteak, for example, goes out and knocks over a bank, precisely how is he leaving his DNA lying around? Dandruff, perhaps?
Any lawyer with half a brain would simply say that of the hundreds of people in and out of the bank that week, how many had dandruff? Perhaps Cheesesteak was in that bank on legitimate business, the day before. His DNA is on the money? It becomes the prosecution’s job to prove that Cheesesteak didn’t actually HAVE that money a week ago, spent it on perfectly legitimate things, and it wound up at the bank through normal circulation of currency.
The bottom line here is that until DNA testing gets a LOT more effective, and FAR better methodologies are developed for tying it to a variety of crimes, trying to convict Cheesesteak of a bank robbery on DNA evidence is going to be a big joke. Therefore, indicting him on DNA evidence is idiotic.
On the other hand, let’s assume that a woman has been raped. She wishes to press charges against her rapist. Well, the culprit has left a pretty substantial DNA sample behind, in the usual manner, and it’s a pretty safe bet that aside from HER DNA, there isn’t anyone ELSE’s in there.
Plainly, the sample belongs to the culprit. Why, then, should the system NOT simply indict “Suspect John Doe, with DNA template #00817263-thus-and-such?”
Legally, I can’t see anything wrong with it. We’ve already established that DNA evidence is admissable for identification purposes.
The DOWN side would involve that “national DNA database” everyone has mentioned… but how is that any different from the fingerprint database we already have? Sure, I’d object if the government demanded the fingerprints of every taxpayer… but they don’t.
And they’ll get my DNA when they pry it from my cold dead fingers, thank you very much…