National Security Agency National Security Agency

Sen. Rand Paul, R-Ky., in front of the federal district court in Washington, where he filed his lawsuit against the Obama administration and the NSA. Charles Dharapak/AP hide caption

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Charles Dharapak/AP

Thousands of websites participating in the "Day We Fight Back" will show this banner, or something similar, to site visitors. Courtesy of Demand Progress hide caption

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Courtesy of Demand Progress

Director of National Intelligence James Clapper testifies during a hearing before Senate Select Intelligence Committee on Wednesday. Alex Wong/Getty Images hide caption

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Alex Wong/Getty Images