I listened to about ten minutes of Michael Savage's radio show yesterday. The gist of the message was thus: the homosexual/liberal vermin must be killed.
I think he meant that metaphorically, but the metaphor sort of dropped out at the end. He had been talking about how the "vermin," i.e. liberals/hippies, homosexuals, and the media are trying to stab a knife into the heart of America in order to kill America and that he wants to fight and kill Americas enemies in response. Notice how that shifts from a metaphorical death to one that just sounds like plain old death.