Long story short; the Washington Post hires a blogger to cover the conservative blogosphere and is embarrassed when he turned out to be your garden variety lefty hater.
Weigel's comments on a left-wing journalist email forum were outed, removing the pretense of fair coverage of the conservative movement--as if it wasn't patently obvious to begin with.
I don't think the motivation can be more clearly described than Don Surber's take:
There was no journalism being practiced by Dave Weigel in this blog. The Washington Post Online hired this guy to make fun of the Right in order to entertain the Left and to re-assure liberals of how superior they are morally and intellectually to the godful mouth-breathing horde on the other side of the political fulcrum.
Facebook is providing me an up-close-and-personal look at the maniacal hatred the left engages in as a matter of course. These are deeply disturbed people--angry all the time, and totally comfortable with dehumanizing anyone who doesn't instantly praise their most casual opinion.
The only reason to correspond with them, is to embarrass them for the benefit of all the lurkers.
Ironically, the taproot of that anger is fundamentally a classically conservative response to a world changing around them in ways they simply can't comprehend. Everything they "know" is wrong and there is panic at the thought that their entire lives have been wasted worshiping false gods. Keynesian economics is working about as well as it did in the 1930s. Socialized medicine isn't evoking hallelujahs from the downtrodden masses, and the 'good' elected Democrats that would restore balance to the force have turned out to be nothing more than criminals and buffoons.
We are left with a torrent of rhetoric largely consisting of condemnations for racism, ignorance and bad hygiene.
Yet worst of all--no one is listening to them. CNN goes back to the dog-eared playbook of the left-wing media and hires the smartest liberal they can find and matches him with a strawman conservative, or in this case a straw woman conservative in the guise of the unread Kathleen Parker. It may be balm for the tortured souls of besieged socialists, but it most closely resembles calls for more sacrifices and devotion to Baal to keep away the invading armies, droughts and other imminent dooms inexorably descending upon them.
Everything that used to work, doesn't work anymore, and they are stumped as to what, if anything they can do to turn the tide.
