Protesters are called a "mob!"
Rep. Lloyd Doggett's office is calling the protesters who swarmed him in Austin over the weekend a "mob," and blaming the chaos on the local libertarian and Republican activists.
The Doggett protests also appear to be part of a larger organizing effort by Tea Party activists who are sending out guidance on how to disrupt a public event by a member of Congress.
I believe that by acting unruly and threatening, protesters allow their critics to dismiss them as "Republicans" and worse. It's playing into their hands. Show up, wave your (homemade) sign, be polite, and stand there.
In short, act like ladies and gentlemen.