A new and unusually entertaining skirmish from the blossoming Democratic civil war. Don’t be shocked by this: Matthews’s history with the online left is as long and bitter as his history with the right, although I am a bit surprised that he’d take it quite this far. Remember, the modern-day Murrow made an uber-nutrootsy empty threat just last night to go to prison rather than buy ObamaCare insurance. Are we to assume from this that Chris sees Olby in the same light as he does grassroots progressives? (Keith is, after all, a contributor to Daily Kos.) If not, why not?...