During Season 2 of The Simpsons, an episode called “Itchy & Scratchy & Marge” had Marge become a public figure, appearing in newspaper letter pages (remember them, pre-Twitter?) and on TV to protest the violence in the children’s television “Itchy & Scratchy” cartoons. That was back in 1990, and it’s still one of my favorite Simpsons episodes. And now, 30 years later (think of that), there’s a new episode presented tonight