Electronic Frontier Foundation
There are several ways to get involved with the EFF in DC and online. They include: Coding with EFF, Translating with EFF, Community Organizers, and Cooperating Attorneys. Allies in DC include CryptoParty Bmore (@CryptoPartyBalt on Twitter) and Privacy Tools in Action at the DC Public Library. There are also opportunities to join the EFF Alliance or Donate to EFF.
The EFF is headquartered in San Francisco but active around the United States.
The Electronic Frontier Foundation is a nonprofit organization that has worked to defend digital civil liberties since 1990. They support user privacy, free expression, and innovation.