Wikipedia black out

Wikipedia is having a black out on their site to oppose a internet bill in the US. The bill in effect will gives anti piracy more power to block sites. By doing that, the these people seems to make it more simply just a click of a button to block out websites. Currently it seems when pirate contents are found they will send out letters to demand for removal. So if you encounter foreign websites that ignores your letter the best way is to block? It will lead a block off the US internet from the rest of the world. Some lazy bums just decide to use blockage as the ultimate stoppage of having their content freely available. You can block yourself from the world but the world that got blocked still have access to many contents, minus US websites. It would be like a self exile in internet world.