This is what happened when Michael Moore spoke at the University of Arizona. http://wildcat.arizona.edu/papers/98/36/01_2.html Notice the irony? I think that those doing the heckling are showing disrespect not only to the speaker but to those that wish to hear what the speaker is saying. I don't want to hear Moore or Coulter because I think they're both lunatics but if I had to be in the audience, I would certainly respect those that want to listen.