Back in late 2011, GeekTyrant blacked out our logo to protest SOPA. Thankfully, it was defeated because informed people organized to prevent the very best things about the internet from going away. Even if you know the full story, make sure to watch The Fall of SOPA, created by Sam Mularczyk. It has beautiful motion graphics and reminds us of when 1 billion people united to keep the internet free.
(Thanks: BoingBoing)