Protection of Freedoms Bill

I accept some of what the right hon. Gentleman says, but surely he must recognise that there are shades of grey in this debate. He says that we need to be protected from murderers and rapists, but many law-abiding citizens have concerns about being fitted up by the police or the possibility of the science and technology proving faulty—and who knows where DNA technology will be in 20 or 30 years' time? Does he not recognise that there are shades of grey in this particular debate, and that painting it in the simplistic way he does—although it is good that we are having this debate—rather debases his argument?