Parental advisory: This column discusses 'speech' Whenever a Supreme Court opinion is bristling with references to Renaissance paintings, classical mythology, and "art and literature throughout the ages," you know the court is about to invoke the First Amendment to protect "Bisexual Schoolgirls' Porn Pictures." Writing for the court, Justice Anthony Kennedy struck down a perfectly sensible federal child porn law last week. Though you might think the attorney general was preparing to rip "War and Peace" off the shelves, the law simply extended the reach of the federal child pornography laws to computer-generated "virtual" images of minors engaging in sexually...