Margaret Spellings, America’s new Secretary of Education, has denounced PBS for “spending public money on a cartoon with lesbian characters, saying many parents would not want children exposed to such lifestyles. The not-yet-aired episode of “Postcards From Buster” shows the title character, an animated bunny named Buster, on a trip to Vermont — a state known for recognizing same-sex civil unions. The episode features two lesbian couples, although the focus is on farm life and maple sugaring. A PBS spokesman said late Tuesday that the nonprofit network had decided not to distribute the episode, called “Sugartime!” to its 349 stations.”