Reporters sans frontières is organizing a 24-hour online demonstration against Internet censorship, starting next Tuesday, 7th of November, 11am Parisian time (that's 10am UTC and 5am EST for the Anglo-Americans out there).
You connect to their server and, if I understand the press release correctly, try and Slashdot sites belonging to oppressive governments. Or however else clicking can 'help to change the "Internet Black Holes" map and help to combat censorship'. I sure do hope they have enough server capacity themselves to withstand a Slashdot effect, but if not, someone will probably summarize what's going on in time.
With governments everywhere using terrorism as an excuse to crack down on civil liberty (China, United States, and starting November, Indonesia), it is up to the concerned among us to speak up while we still can. Make your voice heard!