Cool....I think Rush should sue the shit outta them. That wasn't just saying they disagreed with him they are blatantly verbally threatening his life. I bet this doesn't make any liberals blink though. They only get their panties in a twist if someone like O'Reilly calls a late-term abortionist a baby killer (which he was) and then someone thought to take actions into his own hands.
They arent inciting anyone, and Rush wouldnt sue someone like this.