Protesters

Have you ever noticed that some protesters often hide their faces? Especially the recent anti-war crowd (although I have seen it on both sides of the fence)? Could this be because they know that what they are doing is wrong in some sense? Some would say that they are afraid (Does that Explain why they chose yellow for the signs they carried in the ANSWER march in the nation's capitol recently?). Afraid of what? What I find even scarier is that these same scared or "knowingly wrong" crowd vote. If you have something to say and you can't say it an show your face, for whatever reason, then maybe you shouldn't say it. Just some food for thought.