Thousands turned out to hear speeches by security expert Bruce Schneier, Rep. Justin Amash, and whistleblower Thomas Drake.
Rep. Jim Sensenbrenner's USA Freedom Act gets the seal of approval from Amash, who lost a narrow fight to defund NSA phone spying.
They're just like us!
The rally will coincide with the 12th anniversary of the Patriot Act.
Revelations about the NSA's online spying operations are especially sensitive for German citizens.
Tim Berners-Lee joins the movement to oppose online surveillance.