What are you, in law enforcement? This is a story about warrantless collection of DNA in a rape case. Not everyone is a rapist. How far do we let police intrude into people's lives who HAVE NOT committed any crime? How far can they intrude into your life without probable cause to believe you committed a particular crime? Should they be allowed to scan though your house walls? If you let infrared light seep out of your house, that is your problem! Should they be allowed to read all your emails? Oh, if you send your emails using weak encryption procedures through a third party, that is your problem! Should they be allowed to listen to all of your phone calls? Same principle.
The theory is we're supposed to be a free and open society. But not so open that those who have not committed a crime should have their information (DNA or whatever) stored in a database. We're supposed to have protection from government intrusion, at least that's part of what the Constitution was trying to prevent. We're supposed to be secure in our person and property. At least that's where DNA is getting very iffy lately. It's part of OUR Person..
The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no warrants shall issue, but upon probable cause, supported by oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized.