There are many ways to show your support for a movement. Some choose to take part in Demonstrations, movements and Hacktivism.
I was thinking about the grow of Anonymous and it's media power. Each time Anonymous does something it gets in the news, it gets spread and travels the world.
It even goes to the countries were censhorship is active but what happends after? If we look back at 1989 most of you guys will remember the Tiananmen Square protest.