Mostly because it's such a treat to read someone from the actual left in the mainstream media (to balance all those right-wingers), but also because
she sums up the anger of many Democrats rather well.
Or perhaps anger isn't quite the right word here. Confusion, bitterness and frustration? A feeling that the "Democratic base" has been disowned? Wondering about the fruits of all that hard work before the 2008 elections and about the single direction these new political compromises take. Standing behind the backs of the administration and thus never finding a compromising hand extended in that direction.