I would agree with you if those arguments you cite were reasoned.  Too often the charlatans that make up the right wing media machine will do a multi-show "expose" on some liberal conspiracy, only at the very end say that they found nothing.  Unfortunately the rubes that truly believe this idiocy don't hear the short bit that claims the previous week's shows were all just speculation.  I listened to it with Beck and the FEMA camps, and it happened again and again through the entire Obama administration.  

As for the idiots on college campuses, that is a whole other bag of poo, the kids there can't seem to understand free speech.  Bear in mind, though that just because you have a right to say something doesn't mean that you will find an audience that doesn't think you a fool.  The best thing that could be done to folks like Coulter, is when they speak at a college, no protests, but instead, let speak, their foolishness will be enough.