Absolutely agree. This is why I'm so disappointed that Matt took the bait and now exclusively slings mud at the left.

That said, at present I'm more concerned about the fringes (yes, on both sides) and their ability to ideologically isolate and radicalize the people in their orbit. The constitution has no remedy for that, and Taibbi is unquestionably at the forefront of feeding people into the right wing of that system.