PEOPLE HAVE TO STAND UP FOR WHAT THEY THINK IS RIGHT. Even if the effect it has seems insignificant. It doesn't matter if your an ass for doing it. It doesn't matter if some people think you were trying to cause trouble. If you don't stand up for what you personally think is right what do you stand up for?
Was she right? Were the officers wrong? That's for you to decide but it doesn't really matter. She had a conviction to do what she thought was right, and hopefully inspired others to do the same. And I can't imagine not respecting her for doing so.
If the only time you could complain about SOPA was in airport security only the brave and scared would complain about SOPA. And you can bet others would find them annoying.