> I see these DNA database searches as an amazing tool to find criminals and not in any way privacy infringing. And I wish it was more widespread, ideally everyone being required to submit their DNA.

I think I can at least understand the viewpoint of those who favor DNA database searches. But, I don't understand how DNA database searches are not obviously in tension with privacy. Can you explain why you think that DNA database searches are "not in any way privacy infringing"?