Mass surveillance has become one of the U.S. government’s principal strategies for protecting national security. Over the past decade, the government has asserted sweeping power to conduct dragnet collection and analysis of innocent Americans’ telephone calls and e-mails, web browsing records, financial records, credit reports, and library records. The government has also asserted expansive authority to monitor Americans’ peaceful political and religious activities.

Information Sheet: How NSA's Surveillance Procedures Threaten Americans' Privacy
Summary of National Security Agency Domestic Spying Revelations
Myths and Facts About Section 215 Domestic Call Tracking