The SOPA and PIPA acts, currently working through the US government, are probably the biggest threat ever to the freedom of the internet. They give the Hollywood studios and RIAA power to mess with the fundamental structure of the Internet just to protect their outdated business models. Although american acts they will have repercussions around the world.
Wikipedia, along with various large Web companies and social media sites, are going dark tomorrow in protest against SOPA and PIPA. We should wish them luck, whatever we think of them in other respects they are on our side in this situation.
It would have been nice to hear something from our politicians.
Here is a short intro for anyone who doesn't know what the acts are about.: