Washington Post media reporter Paul Farhi reported in Tuesday’s paper that former NBC and CNN journalist Campbell Brown found a new calling. “After years as a journalist, steeped in notions of fairness and balance, Brown has transformed into an advocate” – against tenure for teachers.

Since taking on the teachers’ unions apparently makes you a public enemy, the Post and Farhi then lined up Diane Ravitch, a former GOP education bureaucrat-turned-lefty, to trash Campbell Brown as a pretty bubblehead who knows nothing: