Prepare idea for crime seminar

To prepare myself for the crime fighting seminar I have red some articles on the links that suggested on the red book.
Fri st article was on BBC website 'Home secretary hails CCTV usage'
It was a report by Jacqui Smith, the home secretary. She said that The use of CCTV and neighbourhood wardens led to a fall in robberies and burglaries.
The second article was about DNA
There was an argument between Home Office and GeneWatch on the DNA database.
Generally, GeneWatch doesn't agree to use DNA record.