DNA "polls" "roundups" or whatever name one's LE chooses to give them have been conducted here in USA, too.
Recently, thousands of young white men who had access to white pickup trucks were subjected to a DNA roundup in Louisiana, during the time the LA serial killer was being sought. They were promised their DNA was going to be destroyed if it didn't match (it wasn't) that the process was going to be kept secret (it wasn't) and that they were under no legal obligation to comply with LE's request (that part was true).
Men who refused to comply with the request had their names "leaked" to media, and their reputations trashed, with lots of inuendo going around from LE: "We can't imagine WHY he won't comply with our request! Unless, he's, you know, guilty or something."
Bottom line: at least here in USA our constitutional civil rights FORBID LE from gathering DNA without just cause. So we are entitled to refuse on that basis alone, and we are entitled to refuse without LE making public assumptions that our refusal means we're "guilty."
And if you're ever asked to "participate" in one of these roundups here in the states, I hope you will refuse. Because the DNA of these young men was NOT destroyed, their privacy was NOT ensured, and LE broke every fricking promise in the book. We are losing our civil rights milimeter by milimeter, because we are simply giving them up.....
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