Over at techdirt.com is a very concise argument on why giving up your privacy doesn’t make you more secure. Key quote:
“Confiscating shaving cream and nail files at the airport doesn’t make anyone safer. Neither does creating a national ID card, because terrorists rely on surprise, not anonymity. The fundamental issue is that real security involves focusing resources on identifying and stopping the tiny fraction of the population that is engaged in criminal and terrorist acts. The vast majority of people pose no threat to anyone, and it’s a waste of resources to monitor them. “
See Techdirt: If You’re Watching Everyone, You’re Watching No One for the entire article.