. . . stepping in it, I am going to have to disagree with Greg Sargent here [1] and agree with the first commenter in the thread who says this:

making fun of a public figure is a lot more "in bounds" than calling the Rutgers team a bunch of "nappy headed hos".

As much as I detest Rush -- this seems merely like edgy political humor to me, and I'm sure we've seen similar from the left making fun of, say, southern white preachers and the like.

It's free speech. It's protected and it's a far cry from yelling 'fire' in a crowded theater. When he starts calling for politicians to be shot, or goes to great lengths to dehumanize racial groups, well, then we have a problem. But this? This is just really bad humor.