Nobody stood up to the same tactics the Nazi brown shirts in the 30's and look what happened. MoveOn has basically the same ideology (Fascism). I guess you have never really stood up for yourself against these people. I have met many and the only thing that scares them is calling them out on their propaganda. Heck, these guys protesting and getting arrested is a badge of honor for them. They expect you to remain silent while generating photo opts getting "arrested".
What drives them away are counter protest, i.e calling their butts out. We are in a battle, civility has long been a victim. I bet you were all up in arms when people were "bothering" Al Gore when the chanted "Get out of Chaney's house".
http://www.freerepublic.com/focus/f-news/1264898/posts