Christ knows what a fascist government could do if it ever got into power with that kind of information on its citizens.
He does indeed.
I think you have a point, although I can see where Jane is coming from as well.
What kind of things could the state do with my DNA? The most serious thing I can think of is when dna is found on something which points to you but you actually had nothing to do with the crime.
What else? how is it different to CCTV? Do you disgree with that?