Protection of Freedoms Bill (Programme) (No. 3)

In deciding whether to support the amendment or the Government tonight, I have to balance the loss of rights of those people who had crimes committed against them, or who may have crimes committed against them as a result of reducing the period of the retention of DNA from six years to three, against the injustice that might be visited on innocent people whose DNA is kept for three years longer than it otherwise would be. Can the Minister tell me, in words simple enough even for me to understand, what exactly the loss of human rights and the injustice will be to those innocent people who have their DNA kept for three years longer before it is wiped? Can he compare that with the suffering of victims who have crimes committed against them by people who will not be detected?