Online Privacy and Security Toolkit: Know Your Rights!
Tools, tips, and tricks to take control of your online presence and stay safer on the web.
Constitutional Rights to Privacy
The First Amendment protects the privacy of your beliefs
The Third Amendment protects the privacy of your home against the use of it for housing soldiers
The Fourth Amendment protects your privacy against unreasonable searches
The Fifth Amendment protects against self-incrimination, which in turn protects the privacy of your personal information
The Ninth Amendment says that the "enumeration in the Constitution of certain rights shall not be construed to deny or disparage other rights retained by the people." This has been interpreted as justification for broadly reading the Bill of Rights to protect privacy in ways not specifically provided in the first eight amendments.
The Electronic Frontier Foundation is a nonprofit organization that has been defending civil liberties in the digital world since 1990. They keep an "Action" page updated with all the latest issues facing digital civil liberties, and provide avenues for you to get involved.