I can't go into much details here, unfortunately; but if anyone happens to be at a town hall that gets infiltrated, someone should ask the protesters who they work for.
I work in the health insurance industry, and I can tell you that people here are being STRONGLY encouraged to go and protest. Suggestions are being sent around along with misinformation. The intimation is that people's bosses will be at the rallies and town halls and on the look out for people who "are interested in keeping their jobs".
So, when you see these crazy people there carrying signs, they may just be getting paid by the other side.