Except with Clinton, it was just to make him part of the story, because he was a narcissist. With Obama its something much darker. The movement behind Obama needs chaos to proceed to their next phase. See post #4, I think he knows where this is going.
Clinton tried to blame the Oklahoma City bombing on talk radio, presumably hoping to force Rush off the air. Some Democrats are trying to get Rush silenced now because of his comment about Sandra Fluke...and some are trying to make him somehow guilty in the Martin killing. I don’t think he is in any danger of being forced off the air—he survived 1995.