Examples of unneeded intrusions of privacy that the United States impose on it's citizens?

I’m writing an essay on privacy for the book 1984 and it’s relationship with the United States government.

I’ve come up with my thesis question which is:

What unneeded intrusions of privacy does the United States impose on it’s citizens?

My essay will be about the unneeded security (or ineffective approach on security, such as face recognition* or Body Search xray machines) that jeopardizes citizens privacy.

I’m writing my essay outline, and several ideas I have are:

1. Patriot Act (internet surveillance, documents, phone line tapping)
2. Video surveillance (Unnecessary cameras: A. they create a false sense of security** B. They have a wrong purpose, such as the Florida ticket cameras where many believe weren’t to improve driving but mainly to increase revenue for the government.)

Do you have any opinions? Items to add to my list? Negative comments? Helpful comments?

haha, well thanks in advance. I’d appreciate your input.

-ben

* Face recognition: “One government study, for example, showed a 43 percent error rate of false negatives – a failure to properly identify posed photographs of the same person taken 18 months apart.”
http://www.aclu.org/national-security/facts-airport-security

** Cameras: “Some have also proposed using video surveillance to scan crowds at airports and compare those images with photographic databases. Facial recognition technology is even less accurate in those circumstances and its use will not only create privacy problems for law-abiding passengers, but will create a false sense of security. ”

http://www.aclu.org/national-security/facts-airport-security