. >> reporter: defense lawyer barry schick who has used dna to free people wrongly convicted said the court is wrong to allow taking dna without a search warrant. >> this case is not about dna databases good or bad. this is about the warrant requirement and the protections that a neutral detached magistrate gives to the privacy of citizens. >> reporter: the court said today dna can be taken only from people arrested for serious crimes. the dissenters said it could become broader and could eventually cover nearly one-third of americans arrested for any crime by age 23. brian? >> a big ruling today in washington. pete williams at the court to start us off tonight. pete, thanks. >>> it's been three days since the awful deadly outbreak of tornadoes in oklahoma. the size and sadness of the loss in terms of lives and property got worse today. nbc's katy tur is in union city, oklahoma, tonight. good evening. >> reporter: good evening, brian. i'm standing on the second floor of this home, or at least what was the second floor. it was completely blown off when the tornado on friday came barrel