Freedom of speech seems beleaguered at the moment.
Some members of congress might already be backpeddling, seeking distance from SOPA and PIPA (Stop Online Piracy Act and Protect IP Act) but it's still an issue that needs a lot of shouting to kill. Flickr is one of the sites that would most certainly be affect, as well as a host of others. Whatever the ills they say they are targeting, this isn't the way to go about it.
You can find stuff just about anywhere, and searching wiki for anything will pop you to a page where you can enter your zip code and they'll tell you who your rep is.
Other good links I saved:
http://americancensorship.org/ http://arstechnica.com/tech-policy/news/2012/01/protesting-sopa-what-you-can-do.ars http://www.librarian.net/stax/3778/getting-serious-about-sopa-what-librarians-need-to-do/ Not sure how legit everything he says is... but he's interesting...
http://www.youtube.com/watch?v=WJIuYgIvKsc