After Ruth Shalit’s recent 13,000-word New Republic article, “The Washington Post: In Black and White,” about affrmative action at the Post, several fiercely independent writers popped up to discuss the piece — which meant attacking Ruth Shalit. First the Post’s Howie Kurtz weighed in, then the Post’s Richard Cohen, then Jonathan Alter of Newsweek, owned by the Washington Post Company. And one day last week we had the Post’s Donna Britt assessing Shalit as “a marginal reporter” and the Post’s William Powers reminding readers that she “plays the writing game fast and loose.” Well done, troops! Your dinner invitations to Mrs. Graham’s will be arriving shortly.