Arguments for government monitoring

• Increased crime detection - due to the placement of CCTV cameras, the success rate of conviction is increased as criminals are more likely to be convicted due to the increased ability to prove a suspect committed an offence.

• Prevention of terrorism - terrorist activities need coordination and this is often done using electronic equipment. If communications between devices can be monitored, the activities of terrorists can be prevented before any terrorist attacks are carried out, and their networks can be disclosed by network analysis and traffic analysis.

http://en.wikipedia.org/wiki/Privacy