There is a useful response: give $50 to your congressman's opponent, attach a receipt, and vote democrat in the next election. Remember, the only people in the us who matter are voters (especially primary voters), donors, and campaign volunteers.
Why would voting for someone who voted for SOPA help stop it?
Harry Reid, D-NV, senate majority leader, is pushing SOPA as a jobs bill so claiming that it's a republican idea is silly.
http://maplight.org/us-congress/bill/112-hr-3261/1019110/tot... shows that police and firefighter unions are supporting SOPA, as are the teamsters, the electrical workers union, as well as the movie-related groups that you'd expect.
Politics is no fun. It's not like if I voted for the Republican opposing her that we'd get a better deal for ANYTHING that I cared about. We need a third party with reasonable political power, and/or a proportional-governance system where you tally the votes and give each party its proportional share of representatives. The current system is broken.
I'm not going to say one should or shouldn't vote Democrat. But, there are too many considerations on which I'm unwilling to compromise to just vote for the enemy of my enemy. Neither party is your friend.
And they need to be punished, just like a good spanking at the right time does wonders for spoiled brats.
This sounds awfully like "I Voted for Kodos".