Because if Nader hadn’t run, the Goracle would have won Florida and the assault-weapons ban wouldn’t have been allowed to lapse and Cho Seung-Hui wouldn’t have been able to buy a gun and the glaciers wouldn’t have melted and Saddam Hussein would be transitioning Iraq to democracy, etc etc etc etc etc etc etc.

Mass murder — the perfect occasion to enforce party discipline.

Update: Seems like the right place for the dKos post of the day, so here you go. That’s what ex-POW John McCain gets for supporting gun rights.

Update: Hmmm.