Let me note that SOPA is a reminder of why you, the geek, the fan, the otaku, are important.
SOPA was and is a grand illustration of ignorance, greed, and stupidity. It would destroy a great deal of freedom, was a legal and technical nightmare, and contained so much wrong it'd be hard to describe (fortunately others have done this for me).
Of course we geeks knew this. Tech geeks could see where this was dangerous technically and security wise. Culture geeks saw how this could destroy sites and communities. Artistic geeks could see their livelihood curtailed or destroyed. We knew in short it was REALLY BAD.
An awful lot of geeks rallied to give congress what-for, and are continuing to do so. They do this because they get how things work – and know what's happening.