When the whole Letterman/Palin controversy first erupted I published a post in which I was critical of his comments which I found to be crude and insensitive, and I still think that they were. I still think Letterman is quite biased in his attitude and that he is largely intolerant of those with whom he disagrees. He shows little respect for those on the right and gives wide berth to those on the left.
However, having said all of that I think the calls for Letterman to be fired are ridiculous. If you don’t like his politics or his smirking attitude then don’t watch him. If you’re really upset about things then write a letter to CBS or your local newspaper saying so. After that, shut up and move on, don’t continue to harp on a tired topic.
This is how free speech works, he says what he thinks, you say what you think, but you don’t fire someone for being stupid. We’ve got many better things to discuss than a nasty old guy in Manhattan.