A stray cable comment triggers an Internet firestorm. Michelle Goldberg on the Ann Romney tempest—and her very qualified apology.SNIPHere’s what happened. On Sunday, I appeared on a Mother’s Day edition of Up With Chris Hayes, a weekend morning talk show, along with Katie Roiphe, Eve Ensler, and Jamila Bey.SNIP One of the show’s topics was the saccharine op-ed that Ann Romney published in USA Today, “Three seasons of motherhood.” The main point I wanted to make about it is that our society offers mothers a deal: what we don’t give them in tangible support, we make up for insipid paeans.SNIP...