I still don't really understand why censorship was the flag everyone was waving. Those bills would have ruined Internet businesses and bogged down all the user-driven innovations that have governed the Internet for the past decade.

That speaks to more people in all walks of life, across the political spectrum, even the apolitical. It just takes a little more cleverness to make concise.

However, now that SOPA/PIPA are no longer part of the context, and the spin has become anti-piracy, you won't really win many minds by crying censorship; censorship requires specifics to convince people it's a valid angle, and you'll just sound pro-piracy. I think you'd get further just going all out and saying you're against Internet regulation.

Anti-regulation is not typically a popular idea for the left, but it aligns with the interests of most people in this case, because we know the status quo is what we want.

If it isn't anti-regulation, it should just be pro-innovation, and make the case that piracy is a non-issue, especially to the innovative and/or quality content providers willing to price their products reasonably. It's a strong argument that is growing in popularity.